Menstrual Regulation and Emergency Contraception - Obstetrics and Gynecology

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Menstrual regulation medication and emergency contraception?


Hello Doctor, I would like to ask about my menstrual regulation medication.
I have been taking it for quite a while.
I am using two types of medications: one is CLOMIPHENE CAPSULES "YU" (active ingredient: CLOMIPHENE CITRATE 50MG) which I take on the third day of my menstrual cycle, and then after ovulation, I take SHITON S.C.
TABLETS "YU SHEN" (active ingredient: NORETHINDRONE 5MG).

Q1: I started taking the medication on August 19, and on that same day, I had unprotected intercourse.
However, I usually take the medication before bed.
Do I still need to take emergency contraception?
Q2: If I need to take emergency contraception, is it still effective if I take it now? Since I have already started taking the second type of medication.

Q3: I would also like to ask if I am in a safe period after starting this medication?

Niming, 10~19 year old female. Ask Date: 2018/08/20

Dr. Huang Jianzhong reply Obstetrics and Gynecology


I have been taking menstrual regulation medication for quite a while.
I am using two types of medications: one is taken on the third day of my menstrual cycle, which is CLOMIPHENE CAPSULES "YU" (active ingredient: CLOMIPHENE CITRATE 50MG), and after ovulation, I take SHITON S.C.
TABLETS "YU SHEN" (active ingredient: NORETHINDRONE 5MG).

Q1: I would like to ask, I started taking the medication on August 19, and on that day, I had unprotected intercourse.
However, I usually take my medication before bed.
Do I need to take emergency contraception?
A: Yes, you need to take emergency contraception.
Q2: If I need to take emergency contraception, is it still effective if I take it now? Because I have already started taking the second type of medication.

A: Yes, it is still effective if you take it now.
Q3: I would like to ask, does starting this medication mean that I am in a safe period?
A: This method of menstrual regulation is controversial, and there is no safe period.

Reply Date: 2018/08/20

More Info


Understanding menstrual regulation and emergency contraception is crucial for women who are managing their reproductive health. In your case, you are taking Clomiphene Citrate and Norethindrone, which are medications often used for regulating menstrual cycles and managing ovulation.

Q1: Do I need to take emergency contraception after unprotected intercourse on the same day I started my medication?
If you had unprotected intercourse on the same day you started taking Clomiphene Citrate, it is important to consider the timing of ovulation. Clomiphene is typically used to induce ovulation, and ovulation usually occurs several days after the last dose of Clomiphene. If you had intercourse on the first day of taking Clomiphene, it is unlikely that you would have ovulated immediately, but it is still possible depending on your individual cycle.
Emergency contraception (EC) is most effective when taken as soon as possible after unprotected intercourse, ideally within 72 hours, but some forms can be effective up to 5 days later. If you are concerned about the possibility of pregnancy, it is advisable to consult with a healthcare provider about whether you should take EC, especially considering that you have already started taking Norethindrone.

Q2: If I need to take emergency contraception, is it too late now that I have started the second medication?
It is not too late to take emergency contraception even if you have started Norethindrone. However, the effectiveness of EC can be influenced by the timing of your menstrual cycle and the specific type of EC you are considering. If you are within the appropriate time frame for taking EC, you should take it as soon as possible. Norethindrone is a progestin that can alter your menstrual cycle, but it does not negate the effectiveness of emergency contraception if taken within the recommended time frame.

Q3: Once I start taking Norethindrone, am I in a safe period?
Starting Norethindrone does not automatically mean you are in a "safe period." Norethindrone is a synthetic progestin that can help regulate your menstrual cycle and prevent ovulation, but it does not provide immediate contraception. It is important to understand that while Norethindrone can help prevent ovulation when taken consistently, it does not provide protection against pregnancy if you have unprotected intercourse before the medication has had time to take effect.

In summary, if you are concerned about the risk of pregnancy after unprotected intercourse, it is best to consult with your healthcare provider. They can provide personalized advice based on your specific situation, including whether you should take emergency contraception and how to manage your medications effectively. Always remember that understanding your menstrual cycle and the effects of medications can help you make informed decisions about your reproductive health.

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