Understanding Ultrasound Due Dates and Pregnancy Weeks: Key Insights
Questions about ultrasound due dates and weeks of pregnancy? Hello Doctor: I had sexual intercourse with a female friend on May 16 of this year, during which she still had some menstrual blood. Her last menstrual period was around May 11. She had an ultrasound on July 8, which sh...
Dr. Wu Xianghui Reply:
Genetic testing is necessary for an accurate conclusion.[Read More] Understanding Ultrasound Due Dates and Pregnancy Weeks: Key Insights
Understanding Ultrasound Pregnancy Weeks and Due Date Calculation
Ultrasound Pregnancy Weeks and Estimated Due Date Hello Doctor: May I ask if the number of weeks and days shown on the ultrasound corresponds to the actual date of conception, and how is the due date calculated? Thank you, Doctor.
Dr. Cao Guotao Reply:
Hello, the estimation is based on the size of the fetus; it is not 100% accurate, just an approximate value. Wishing you good health.[Read More] Understanding Ultrasound Pregnancy Weeks and Due Date Calculation
Understanding Pregnancy Weeks: Accuracy and Health Concerns
Gestational age Hello Doctor, my menstrual cycle is irregular. The timing varies each month, but I am certain that my period started on February 2nd and ended on February 13th. I did not get my period in March. I took a pregnancy test on March 25th, which was negative, but I test...
Dr. Huang Yiwen Reply:
Hello, Miss Anonymous: For individuals with a regular menstrual cycle, it is relatively easy to determine the gestational age. However, based on your description, it is difficult to assess your gestational age solely from the menstrual cycle. The initial assessment can only be ma...[Read More] Understanding Pregnancy Weeks: Accuracy and Health Concerns
Understanding Pregnancy Weeks: Is Fertilization Day the Starting Point?
The calculation of gestational age by ultrasound is based on the date of conception, correct? If a transvaginal ultrasound shows that the gestational age is 4 weeks and 5 days, subtracting 2 weeks would indicate the date of conception. However, it's important to note that co...
Dr. Cao Guotao Reply:
Hello, that's about it. Wishing you good health.[Read More] Understanding Pregnancy Weeks: Is Fertilization Day the Starting Point?
Understanding Pregnancy Weeks: How Are They Calculated?
Gestational age The calculation of the pregnancy week is typically based on the first day of the last menstrual period (LMP), not the date of conception. In your case, if the doctor stated that your girlfriend is six weeks pregnant, it means that it has been approximately six wee...
Dr. Cao Guotao Reply:
Hello, it is possible that conception occurred on February 19. If you have any questions, you can consult your obstetrician. Wishing you good health.[Read More] Understanding Pregnancy Weeks: How Are They Calculated?
Understanding Pregnancy Weeks: Can I Be Pregnant from May 5th?
Gestational age Hello, I would like to ask, I have polycystic ovary syndrome (PCOS). My last menstrual period was on May 25, 2019, which started two days after receiving an injection to induce menstruation. A pregnancy test on May 23 was negative, but I had unprotected intercours...
Dr. Cao Guotao Reply:
Hello, it should not be the one on May 5th. Wishing you good health.[Read More] Understanding Pregnancy Weeks: Can I Be Pregnant from May 5th?
How to Calculate Pregnancy Weeks: Understanding Your Cycle and Symptoms
How to calculate pregnancy weeks? Hello Doctor, my last menstrual period was from February 24 to February 28, and my next period was expected to start on March 24, but it has been delayed by three days. I had sexual intercourse on March 23 and 26. I went to the gynecologist for a...
Dr. Huang Jianzhong Reply:
The last menstrual period was from February 24 to February 28, and the next period was expected to start on March 24, which has been delayed by three days. Sexual intercourse occurred on March 23 and 26. A visit to the obstetrician-gynecologist included an ultrasound and urine te...[Read More] How to Calculate Pregnancy Weeks: Understanding Your Cycle and Symptoms
Understanding Ovulation, Pregnancy Weeks, and Conception Timing
Ovulation, pregnancy, and gestational age issues? Hello doctor, my menstrual cycle is from June 11 to June 16, averaging 39 days. I had unprotected intercourse on June 25 and July 5, and according to the app, my ovulation day was July 7. I also had unprotected intercourse on July...
Dr. Cao Guotao Reply:
Hello, based on what you mentioned, it seems like conception occurred around July 5th. If you still have concerns, you may consult your regular obstetrician-gynecologist. Wishing you good health.[Read More] Understanding Ovulation, Pregnancy Weeks, and Conception Timing
Understanding HCG Levels and Pregnancy Weeks: What You Need to Know
Is the HCG level accurate, and how does it relate to the weeks of pregnancy? Hello, my last menstrual period started on February 28. My average menstrual cycle is between 35 to 36 days. I used an ovulation test on March 18, which showed two lines of equal darkness (with one faint...
Dr. Zhang Kunmin Reply:
Hello, based on your description, there are currently two possibilities: anembryonic pregnancy or ectopic pregnancy. Since the hormone levels are not high and there is no significant increase, the immediate risk is not high. It is recommended to follow up with your physician as a...[Read More] Understanding HCG Levels and Pregnancy Weeks: What You Need to Know
Understanding Conception Timing: Key Insights for Expecting Mothers
Pregnancy issues The last menstrual period was on October 5, 2015, and ended on October 9. Intercourse with ejaculation inside occurred on November 12 and 13, while external ejaculation occurred on November 16 and 18. On November 21, there was only external rubbing. I am currentl...
Dr. Lin Wenbin Reply:
Go to the hospital to check the status of the pregnancy weeks for further assessment.[Read More] Understanding Conception Timing: Key Insights for Expecting Mothers
Understanding Pregnancy Weeks: How to Calculate Your Cycle
How is the pregnancy cycle calculated? The reason why the pregnancy duration is calculated as 5 weeks after engaging in sexual intercourse on October 23 is due to the way pregnancy weeks are measured. Pregnancy is typically calculated from the first day of the last menstrual peri...
Dr. Lü Lizheng Reply:
At the time of conception, even if it is considered 2 weeks pregnant, from October 23 until now, 21 days (3 weeks) have passed. Adding 2 weeks to 3 weeks gives a total of 5 weeks. Sincerely, Dr. Li-Cheng Lu, Taoyuan Hospital.[Read More] Understanding Pregnancy Weeks: How to Calculate Your Cycle
Calculating Pregnancy Weeks: Understanding Your Cycle and Timing
Pregnancy cycle Hello Doctor, I would like to ask about calculating the actual weeks of pregnancy. My menstrual cycle is regular, approximately 30 days, with the last three menstrual periods starting on July 4, August 7, and September 10. The cycle lasts about 5 to 6 days. I had ...
Dr. Lin Wenbin Reply:
When you checked the baby's heartbeat on October 23, you should have asked the physician at that time for clarification; that would have been the correct approach. If you didn't ask, make sure to proactively inquire with the attending physician during your next visit. O...[Read More] Calculating Pregnancy Weeks: Understanding Your Cycle and Timing
Understanding Your Pregnancy Timeline: Key Insights for Expecting Mothers
Pregnancy cycle Hello Doctor, I am unable to calculate my pregnancy weeks and would like your help in determining my pregnancy based on my regular menstrual cycle (with a maximum variation of 3-4 days). My last menstrual period started on September 10 (lasting about 5-6 days). I ...
Dr. Lü Lizheng Reply:
The reply indicates that the pregnancy should be dated to September. Sincerely, Dr. Li-Cheng Lu, Taoyuan Hospital.[Read More] Understanding Your Pregnancy Timeline: Key Insights for Expecting Mothers
Understanding Pregnancy Weeks: Calculating Your Due Date and Conception Date
Pregnancy cycle I stopped my period on August 29, and now on October 13, I went to the hospital and was told I am pregnant. How many weeks am I? When is the conception date? I calculated that I am 6 weeks and 3 days, but the doctor said I am 5 weeks and 3 days. Did I calculate it...
Dr. Lin Wenbin Reply:
To calculate the weeks of pregnancy, you start from the first day of the last menstrual period (LMP). Additionally, each person's menstrual cycle varies in length, which also needs to be taken into account. The conception date is approximately the ovulation day, and all of t...[Read More] Understanding Pregnancy Weeks: Calculating Your Due Date and Conception Date
Calculating Your Conception Date: A Guide for Expecting Mothers
I would like to know the date of conception? Hello Dr. Lu, my menstrual cycle started on January 15, February 20, and March 21 this year. I had a positive urine test on April 26, but the doctor said they couldn't see the yolk sac. However, I saw a dark circle on the screen. ...
Dr. Lü Lizheng Reply:
Dear ABBY: Hello, on May 3rd, during an abdominal ultrasound, the healthcare provider measured the gestational sac and estimated it to be about five weeks. On May 12th, another abdominal ultrasound showed a heartbeat, and she stated it was 6 weeks and 1 day. Then on May 23rd, the...[Read More] Calculating Your Conception Date: A Guide for Expecting Mothers
Understanding Menstrual Irregularities and Early Pregnancy Signs
Menstrual issues Hello, Doctor: Here’s the situation... My menstrual cycle dates are March 4, March 31, April 29, May 27, June 24, and July 22 of 1999. I had an encounter with partner A on August 1, but there was no complete penetration; however, I felt some contact. Then, on Aug...
Dr. Lü Lizheng Reply:
Hello, based on the information you provided: 1. On November 10, at the medical center, the ultrasound of the neck translucency and abdominal ultrasound showed a Crown-Rump Length (CRL) of 6.33 cm, corresponding to a Gestational Age (GA) of 12 weeks and 5 days. Generally, the g...[Read More] Understanding Menstrual Irregularities and Early Pregnancy Signs
How to Calculate Your Pregnancy Weeks Accurately
Calculation of Gestational Age Hello Dr. Li, I have confirmed that I am pregnant, but I have visited three clinics and they all provided different gestational weeks. My last menstrual period started on January 4th, and I had a normal flow, with cycles averaging around 25 days for...
Dr. Li Guanghan Reply:
There are two ways to calculate gestational age: based on the menstrual cycle (starting from January 4) and through ultrasound measurements. These two methods will inherently show differences. For women with regular menstrual cycles, the discrepancy will be small, while for those...[Read More] How to Calculate Your Pregnancy Weeks Accurately
Understanding Pregnancy Weeks: Calculation Methods and Screening Concerns
Questions about gestational age? Hello, doctor! I apologize for bothering you. I would like to ask you: 1. How is the gestational age calculated? Is it counted from the last menstrual period before pregnancy or from the actual date of conception? Why does my doctor refer to a c...
Dr. Lin Zhaopei Reply:
1. Previously, the calculation was based on the menstrual cycle, so if calculating from the date of conception, two weeks should be subtracted. 2. If the cycle is irregular, ultrasound can be used to adjust the dates, but the values are still calculated based on the menstrual cyc...[Read More] Understanding Pregnancy Weeks: Calculation Methods and Screening Concerns
Understanding Due Dates: How to Calculate Pregnancy Weeks Correctly
Calculate the due date? The due date is typically calculated by adding 280 days (or 40 weeks) to the first day of the last menstrual period (LMP). The formula you mentioned, which is months + 9 days + 7, is a simplified method that may lead to confusion, as it does not account fo...
Dr. Zhuang Zhijian Reply:
Adding 9 to the month and 7 to the day is correct; thus, the estimated due date is 40 weeks, with the first day being the first day of the last menstrual period (therefore, this is based on a regular menstrual cycle). A pregnancy is considered full-term at 37 weeks, and any deliv...[Read More] Understanding Due Dates: How to Calculate Pregnancy Weeks Correctly
Understanding Beta-HCG Levels: Implications for Pregnancy and Testing
Beta chorion Hello, I would like to ask what is beta-hCG (beta human chorionic gonadotropin)? Is a high level related to pregnancy? If the level is elevated, should I return to the hospital for a recheck, and will I need to undergo a blood test?
Dr. Chen Changfu Reply:
Your inquiry likely pertains to the "free beta-human chorionic gonadotropin" test, which is one of the screening tests for Down syndrome in maternal serum during pregnancy weeks 15 to 20. If the screening value is elevated (>2.5 MoM), the risk of Down syndrome increa...[Read More] Understanding Beta-HCG Levels: Implications for Pregnancy and Testing