Pregnancy Risks and Blood Tests for Gender Determination - Obstetrics and Gynecology

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Please help me calculate?


Hello Dr.
Huang: Please help me calculate.
My period started on January 8 and ended on January 14.
I usually start my period 3 to 4 days early every month, and it is very regular.
On January 25, I had intercourse with my husband, and he ejaculated inside me.
Doctor, is this risky? Is there a chance I could be pregnant? What is the likelihood? If I am pregnant, can I do a blood test to determine the sex of the baby? How far along does the fetus need to be for a blood test? What is the approximate cost? I already have a daughter.
I've heard from friends that blood tests for gender determination are real.

P.S.: Why have I suddenly become so hungry lately, and why do I feel so sleepy? My urine is particularly yellow, and sometimes I feel short of breath even when sitting.
I didn't experience this when I was pregnant with my daughter; I had no symptoms, just increased urination and yellow urine.

Yiting, 20~29 year old female. Ask Date: 2004/01/27

Dr. Huang Jianxun reply Obstetrics and Gynecology


1 has already been answered, 2 can be addressed, and 3 is an examination that is not worth encouraging.
Often, unnecessary abortion procedures are performed as a result, leading to situations where there is "no evidence to support" the actions taken.

Reply Date: 2004/01/27

More Info


Hello! Thank you for your questions regarding pregnancy risks, blood tests for gender determination, and your current symptoms. Let's break down your concerns one by one.

1. Risk of Pregnancy: Based on your menstrual cycle, if your last period started on January 8 and lasted until January 14, and you had unprotected intercourse on January 25, there is a possibility of pregnancy. The likelihood of conception depends on the timing of ovulation, which typically occurs about 14 days before your next expected period. Given that your cycles are regular and you mentioned they are usually 3-4 days early, ovulation might have occurred around January 22-24. Therefore, having intercourse on January 25 could potentially lead to pregnancy, but the exact probability can vary. Generally, if intercourse occurs within the fertile window (a few days before and the day of ovulation), the chances of pregnancy can be as high as 20-30%.

2. Blood Tests for Gender Determination: If you do become pregnant, there are indeed blood tests available to determine the sex of the fetus. Non-invasive prenatal testing (NIPT) can be performed as early as 10 weeks into the pregnancy. This test analyzes fetal DNA present in the mother's blood and can provide information about the baby's gender with a high accuracy rate, often exceeding 99%. The cost of such tests can vary widely depending on the provider and location, but it typically ranges from $100 to $300. It's advisable to consult with your healthcare provider for specific recommendations and to find a testing facility.

3. Symptoms You Are Experiencing: The symptoms you described—such as increased appetite, fatigue, yellow urine, and occasional shortness of breath—could be indicative of several factors, including early pregnancy or other health conditions. Increased appetite and fatigue can be common in early pregnancy due to hormonal changes. Yellow urine may suggest dehydration, so it’s important to ensure you are drinking enough fluids. If you are experiencing shortness of breath, it could be due to various reasons, including anxiety or other underlying health issues. It’s essential to discuss these symptoms with your healthcare provider to rule out any potential concerns.

4. General Advice: If you suspect you might be pregnant, consider taking a home pregnancy test a few days after your missed period for the most accurate result. If the test is positive, schedule an appointment with your healthcare provider for further evaluation and to discuss your symptoms and any necessary prenatal care.

In summary, while there is a possibility of pregnancy based on your cycle and timing of intercourse, the best way to confirm is through a pregnancy test. If pregnant, you can explore blood tests for gender determination starting at around 10 weeks. Lastly, keep an eye on your symptoms and consult with your healthcare provider for personalized advice and care.

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