Emergency Contraception: What to Expect After Taking the Pill

Emergency contraceptive pill

Hello, I had intercourse with my girlfriend on September 29 without using a condom.
There was no ejaculation inside; we only had a few thrusts.
However, I took emergency contraception within 12 hours.
Initially, I experienced some nausea and other symptoms, but I still haven't gotten my period.
It's been about 7 days now, and I still haven't had my period.
Is this normal, or should I wait a few more days? I'm very nervous and worried since this is my first time.

Arrow_Arrow, 10~19 year old female. Ask Date: 2015/10/05

Dr. Lü Lizheng reply Obstetrics and Gynecology

1.
After taking emergency contraception, menstruation may not come immediately.
2.
Engaging in sexual intercourse without contraception can lead to pregnancy.
3.
You can wait another ten days.
If menstruation still does not occur by then, a pregnancy test will be necessary.
Sincerely, Dr.
Li-Cheng Lu, Taoyuan Hospital.

Reply Date: 2015/10/05

More Info

When it comes to emergency contraception, it’s important to understand how it works, what to expect after taking the pill, and the potential side effects. In your case, you had unprotected intercourse on September 29 and took the emergency contraceptive pill (ECP) within 12 hours. This is a crucial step, as ECPs are most effective when taken as soon as possible after unprotected sex.

Emergency contraceptive pills, such as Plan B or Ella, work primarily by delaying ovulation. If taken before ovulation, they can prevent the egg from being released, thereby reducing the chance of fertilization. However, if ovulation has already occurred, the effectiveness of the pill diminishes significantly.
After taking the ECP, it is common to experience side effects such as nausea, fatigue, headache, dizziness, and breast tenderness. These symptoms are generally mild and should resolve within a few days. You mentioned experiencing some nausea, which is a typical side effect of the pill.
Regarding your concern about the delay in your menstrual cycle, it is not uncommon for ECPs to cause changes in your menstrual cycle. Some women may experience their next period earlier or later than expected, and the flow may be lighter or heavier than usual. Since you have not had your period for about a week after the expected date, it is advisable to wait a few more days. If your period does not arrive within a week or two, it would be wise to take a pregnancy test to confirm whether or not you are pregnant.

It’s also important to note that stress and anxiety can affect your menstrual cycle. Since you mentioned feeling nervous about the situation, this could potentially contribute to a delay in your period.
In summary, while it is normal to feel anxious after an incident of unprotected sex, taking the emergency contraceptive pill was a responsible action. Monitor your symptoms and menstrual cycle closely. If your period does not arrive soon, consider taking a pregnancy test or consulting with a healthcare provider for further guidance. They can provide you with more personalized advice and support based on your specific situation.
Remember, emergency contraception is a safe and effective way to prevent unintended pregnancy, but it should not be used as a regular form of birth control. For ongoing sexual activity, consider discussing more reliable contraceptive methods with your partner to avoid similar situations in the future.

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