Pregnancy Chances: Should You Consider Emergency Contraception?

Probability of Pregnancy

Your girlfriend's menstrual cycle typically ranges from 32 to 37 days, with her last period occurring from March 28 to April 24, 2018.
You have had one ejaculation and engaged in unprotected intercourse near the vaginal opening, with some shallow thrusting, followed by a second ejaculation outside the vaginal opening.
I would like to ask if, considering that your girlfriend seems to still be in her ovulation period, should I buy emergency contraception for her? Thank you.

Kai, 20~29 year old female. Ask Date: 2022/04/18

Dr. Zhang Kunmin reply Obstetrics and Gynecology

Hello, based on your description, there is a possibility of pregnancy.
I recommend using emergency contraception as a remedy, but please note that its effectiveness is not 100%, with a failure rate of about 3%.
If your period is more than a week late, you should take a urine test to check for pregnancy.
Thank you! Wishing you safety and health.
Dr.
Zhang

Reply Date: 2022/04/18

More Info

When it comes to understanding the chances of pregnancy and the considerations surrounding emergency contraception, it's essential to grasp a few key concepts about the menstrual cycle, ovulation, and the effectiveness of emergency contraceptive methods.

Firstly, the menstrual cycle typically lasts between 21 to 35 days, with ovulation occurring approximately 14 days before the start of the next period. In your girlfriend's case, if her last menstrual period was from March 28 to April 24, and her cycle averages between 32 to 37 days, she may be approaching her ovulation window around mid-April. This is a crucial time when the chances of conception are highest, especially if unprotected intercourse occurs.

The act of "dry humping" or external ejaculation near the vaginal opening can still pose a risk for pregnancy, albeit lower than penetrative intercourse. This is because pre-ejaculate fluid (pre-cum) can contain sperm, and if it comes into contact with the vaginal canal, there is a possibility of sperm entering and leading to fertilization.

Given that your girlfriend may be in her ovulation phase, the risk of pregnancy is heightened. Emergency contraception (EC) is designed to prevent pregnancy after unprotected intercourse or contraceptive failure. There are two primary types of emergency contraception: the copper intrauterine device (IUD) and emergency contraceptive pills (ECPs), such as Plan B (levonorgestrel) or Ella (ulipristal acetate).

1. Copper IUD: This is the most effective form of emergency contraception and can be inserted by a healthcare provider up to five days after unprotected intercourse. It not only prevents fertilization but can also prevent implantation of a fertilized egg.

2. Emergency Contraceptive Pills:
- Plan B (Levonorgestrel): This pill is most effective when taken within 72 hours after unprotected intercourse but can work up to 5 days, with decreasing effectiveness over time. It is available over-the-counter without a prescription.

- Ella (Ulipristal Acetate): This is a prescription-only pill that can be taken up to 120 hours (5 days) after unprotected intercourse and maintains its effectiveness throughout that period.

In your situation, if you are concerned about the possibility of pregnancy, it would be advisable for your girlfriend to take emergency contraception as soon as possible, especially since she may be nearing her ovulation period. The sooner EC is taken, the more effective it will be.

It's also important to note that while emergency contraception is a safe and effective option, it should not be used as a regular form of birth control. Regular contraceptive methods, such as birth control pills, condoms, or IUDs, are recommended for ongoing prevention of unintended pregnancies.

Lastly, if your girlfriend has any concerns or experiences any unusual symptoms after taking emergency contraception, she should consult a healthcare provider for further guidance and support. It's always best to have open communication about sexual health and contraception to make informed decisions together.

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