Pregnancy Chances After Unprotected Intercourse: Key Insights - Obstetrics and Gynecology

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Understanding the chances of pregnancy after unprotected intercourse is a common concern for many individuals. In your case, you had unprotected sexual intercourse on March 2nd, following your last menstrual period on February 21st. You mentioned that you used the withdrawal method (pulling out) but that ejaculation occurred just outside the vagina. You took emergency contraception within two hours after intercourse, which is a proactive step to reduce the risk of pregnancy.

Emergency contraception (EC) is designed to prevent ovulation or fertilization and is most effective when taken as soon as possible after unprotected intercourse. The effectiveness of EC decreases the longer you wait to take it, but it can still be effective if taken within 72 to 120 hours, depending on the type of pill used. Since you took it within two hours, you maximized your chances of preventing pregnancy.

You also mentioned that you took a pregnancy test on March 20th, which showed one line (negative), and you had a follow-up visit to the doctor on March 21st, which also indicated a negative result. Additionally, you took a morning urine test on March 23rd, which again showed one line. These results suggest that you are not pregnant.

The timing of your menstrual cycle is also a critical factor. Your last period started on February 21st, and typically, ovulation occurs about 14 days after the start of your last menstrual period in a regular cycle. If your cycle is around 28 days, ovulation would likely have occurred around March 7th. Since you had intercourse on March 2nd, it was close to your ovulation window, which means there was a potential risk of pregnancy if no contraception had been used. However, since you took emergency contraception shortly after, the chances of pregnancy are significantly reduced.

In summary, based on the information provided, the likelihood of pregnancy appears to be low, especially since you have had multiple negative pregnancy tests following the use of emergency contraception. However, it is essential to remember that no contraceptive method is 100% effective, and there is always a small chance of pregnancy, particularly with the withdrawal method.

If you continue to have concerns or if your menstrual cycle does not resume as expected, it is advisable to consult with a healthcare provider for further evaluation and guidance. They can provide additional insights and support based on your specific situation. Additionally, if you are sexually active and wish to prevent pregnancy in the future, consider discussing more reliable contraceptive options with your healthcare provider.