Concerns About Contraceptive Pills and Progesterone Use: What to Know

There is a concern about taking contraceptive pills and then using progesterone to induce menstruation?

Hello doctor, I finished my last pack of contraceptive pills on April 30 and started taking the prescription medication for menstrual regulation from May 1 (taking it twice a day).
As of the morning of May 6, I still haven't gotten my period, so I haven't started the next pack of contraceptive pills.
Is it okay that I've stopped the contraceptive pills for more than seven days? Will the contraceptive effectiveness be reduced during this period (from May 1 until my next period)? I had sexual intercourse on the 7th; what is the likelihood of pregnancy? Should I wait until the first day of my period or the fifth day to start the next pack of contraceptive pills? If my period doesn't come for an extended period, when should I go back to see the doctor?

Nìmíng, 20~29 year old female. Ask Date: 2017/05/09

Dr. Huang Jianzhong reply Obstetrics and Gynecology

I finished my last pack of oral contraceptives on April 30 and started taking the prescription medication for menstrual regulation from May 1 (taking it twice a day).
As of the morning of May 6, I still haven't gotten my period, so I haven't started the next pack of birth control pills.

1.
Is it okay that I have stopped taking the birth control pills for more than seven days?
Answer: Yes, it's okay.
2.
Will the contraceptive effectiveness be reduced during this period (starting from May 1) until my next period arrives?
Answer: No, it will not be reduced.
3.
I had sexual intercourse on the 7th; what is the likelihood of pregnancy?
Answer: The likelihood of pregnancy is low.
4.
Should I start the next pack of oral contraceptives on the first day of my period or the fifth day?
Answer: According to the instructions, you should start on the first day of your period.
5.
If my period does not come for how long should I wait before seeing a doctor?
Answer: If your period does not come by May 20, you should see a doctor.

Reply Date: 2017/05/09

More Info

When it comes to contraceptive pills and the use of progesterone, there are several important factors to consider, especially regarding missed periods, the effectiveness of contraception, and when to resume taking your pills.

Firstly, it’s essential to understand how contraceptive pills work. Most contraceptive pills contain a combination of estrogen and progesterone (or just progesterone in the case of progestin-only pills). These hormones help to prevent ovulation, thicken cervical mucus to block sperm, and thin the uterine lining to prevent implantation. When taken correctly, these pills are highly effective at preventing pregnancy.

In your case, you mentioned that you started taking a new medication (likely a form of hormonal treatment) on May 1st and have not had your period since then. If you have been taking this medication as prescribed and have not experienced any significant side effects, it may be affecting your menstrual cycle. Hormonal medications can sometimes cause changes in your cycle, including delayed or missed periods.

Regarding your concern about the contraceptive effect: if you have not taken the contraceptive pills for more than seven days, the effectiveness may indeed be compromised. The general recommendation is that if you miss a pill or stop taking them for more than seven days, you should use a backup method of contraception (such as condoms) until you have taken the pills consistently for seven days again.
You mentioned having unprotected intercourse on the 7th. If you have not been taking your contraceptive pills consistently, there is a possibility of pregnancy. The risk of pregnancy is higher if you have missed doses or have not resumed your pills as directed. If you are concerned about the possibility of pregnancy, consider taking a home pregnancy test if your period does not arrive within a week or so after your expected date.

As for when to start your next pack of contraceptive pills, the general guideline is to wait until the first day of your next period to begin taking them again. If your period does not arrive after a reasonable time (typically a week or more), it is advisable to consult your healthcare provider. They can provide guidance based on your specific situation and may suggest a pregnancy test or further evaluation.

If your period is significantly delayed (more than a week or two), it’s essential to seek medical advice. Your healthcare provider can help determine the cause of the missed period, whether it’s due to hormonal changes from the medication or another underlying issue.

In summary, if you have missed your period and have concerns about the effectiveness of your contraceptive method, it’s crucial to consult with your healthcare provider. They can provide personalized advice based on your health history and current medications. Always remember that consistent use of contraceptive pills is key to maintaining their effectiveness, and if you have any doubts or experience unusual symptoms, seeking medical advice is the best course of action.

Similar Q&A

Understanding the Differences Between Menstrual Regulation Pills and Contraceptives

Hello, doctor. Could you please explain the differences between menstrual regulation pills and progesterone pills? Can progesterone pills be used for menstrual regulation? Will taking menstrual regulation pills cause weight gain? Thank you.

Dr. Zhan Deqin reply Obstetrics and Gynecology
1. General contraceptive pills can be used to regulate menstruation. 2. There are also specific formulations designed for menstrual regulation, but their components are quite similar to those of contraceptive pills. 3. Some individuals may experience this due to the presence of p...

Is There a Link Between Proteinuria and Birth Control Pills?

Recently, a routine check-up showed 1+ protein in my urine. I started taking pre-exposure prophylaxis two months ago. Is there a connection?

Dr. Xiao Yongxun reply Family Medicine
Dear Ms. Rona: 1. There are various pharmacological mechanisms available to reduce the chances of conception, such as preventing ovulation, interfering with egg development or maturation, or disrupting pregnancy. Currently, the most commonly used pharmacological method to preven...

Understanding the Risks of 21-Day Menstrual Regulation Pills

Hello! I have been experiencing delayed menstruation every month, and my doctor prescribed a 21-day menstrual regulation medication (Aisilian coated tablets). I would like to inquire about the risks associated with taking this medication. Will it cause my menstrual cycle to becom...

Dr. Zhang Kunmin reply Obstetrics and Gynecology
Hello, the oral contraceptive pill (COC) not only effectively prevents pregnancy but also helps regulate menstrual cycles, reduce menstrual flow, and shorten the duration of menstrual bleeding, all of which contribute positively to women's health. Due to these benefits, some...

Understanding Birth Control Pills: Side Effects and Cancer Risks Explained

Hello Dr. Dong: I have been taking Yaz for almost two years now, and I usually stop for a month every 3 to 4 months without experiencing significant side effects. I previously asked other doctors, and they said that aside from nausea and vomiting, there are no other serious sympt...

Dr. Dong Yuhong reply Obstetrics and Gynecology
Hello: There are various methods of contraception, with oral contraceptive pills and intrauterine devices (IUDs) being common choices. The most important principle is to choose a method that suits you and to use it correctly. There are many types of contraceptive pills, and detai...