Am I Pregnant? Menstrual Irregularities After Contraceptive Use

Can I get pregnant?

On April 7, I took medication to induce menstruation for three days and also took one dose of emergency contraception.
My period started normally on April 17, following my previous period on March 18.
My cycle seems regular, but since May, I haven't had my period.
I took a pregnancy test today, which showed one line, indicating I'm not pregnant.
From April 17 to May 14, I did not have any sexual intercourse, but I had intercourse with my boyfriend on May 15, with ejaculation inside and without a condom.
My period was expected around May 17, but it hasn't arrived yet.
I would like to know if there is still a chance of pregnancy.
I took a pregnancy test today, which showed one line.
I started taking medication to induce menstruation again on the 19th, and I still haven't gotten my period.
I'm wondering if the medications I took in April, including the emergency contraception, could have affected my period this month.
However, I think since I had a normal period in April, it shouldn't impact May, right? I would appreciate your guidance on this matter.
Thank you.

amy, 30~39 year old female. Ask Date: 2017/05/21

Dr. Huang Jianzhong reply Obstetrics and Gynecology

1.
On April 7th, I took medication to induce menstruation for three days and also took one dose of emergency contraception.
My period started normally on April 17th, after having last menstruated on March 18th.
The cycle seems normal, but I haven't had my period since May, and today I took a pregnancy test which showed one line, indicating I'm not pregnant.
There was no sexual intercourse from April 17th to May 14th, but I would like to ask the doctor: my boyfriend and I had unprotected intercourse with ejaculation on May 15th.
My period was due on May 17th, but it hasn't come yet.
Is there still a chance of pregnancy? Answer: Today (May 21st), the pregnancy test showed one line, indicating I'm not pregnant.
I will test again on May 28th.
2.
Today, the pregnancy test showed one line.
I started taking medication to induce menstruation on the 19th, and I still haven't gotten my period.
I'm wondering if the combination of taking the medication to induce menstruation and the emergency contraception in April could have affected the timing of my period this month.
Answer: It should not be the case.
3.
Considering that I took the medication on April 7th and had a normal period that month, it seems unlikely that it would affect May's cycle.
Answer: Yes.

Reply Date: 2017/05/21

More Info

It sounds like you're experiencing a complex situation regarding your menstrual cycle and potential pregnancy after using contraceptive methods. Let's break down the factors involved and provide some clarity.

Firstly, it's important to understand that hormonal contraceptives, including emergency contraceptive pills (like the one you mentioned, "愉婷碇"), can cause temporary changes in your menstrual cycle. These changes can include irregular periods, delayed menstruation, or even missed periods altogether. The hormonal fluctuations caused by these medications can take some time to stabilize, which might explain why your period has not arrived as expected in May.

You mentioned that you took a menstrual induction medication for three days starting on April 7, and your period came on April 17, which was normal. However, since then, you have not had a period in May, and you had unprotected intercourse on May 15. The fact that you took the emergency contraceptive pill and the menstrual induction medication could have contributed to the irregularity in your cycle.
Regarding your concern about whether you could still be pregnant, the negative pregnancy test you took is a significant indicator. Pregnancy tests are generally reliable when taken after a missed period, and a single line on the test typically indicates that you are not pregnant. However, if you are still concerned about the possibility of pregnancy, it may be worth waiting a few days and taking another test, or consulting with a healthcare provider for further evaluation.

It's also important to note that stress and anxiety about potential pregnancy can further impact your menstrual cycle. If you are feeling anxious about the situation, it might be beneficial to talk to a healthcare professional who can provide support and guidance.

In summary, while it is possible to become pregnant after unprotected intercourse, the negative pregnancy test suggests that you are not pregnant at this time. The irregularity in your menstrual cycle could be attributed to the hormonal effects of the medications you have taken. If your period does not arrive soon, or if you continue to have concerns, I recommend reaching out to your healthcare provider for personalized advice and potential further evaluation. They can help you understand your cycle better and discuss any necessary steps moving forward.

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