If I had unprotected sex the same day or the day after I began my first birth control shot what is the chance I might be pregnant?

Thanks for asking!

It is important to say that pregnancy is possible whenever sperm comes into contact with the vagina.

When someone starts a new hormonal method of birth control (like the Depo shot), they need to use a back up method (like condoms or practicing abstinence) for one week before that method will be effective.

After that first week, the hormones will be integrated into the body and can help prevent pregnancy up to 99% (even if ejaculation occurs in the vagina) when taken correctly. In order for the Depo Shot to be effective, a person needs to get the shot every 3 months.

Since the Depo Shot was not effective yet, and unprotected sex did happen, there is a chance of pregnancy.

Emergency Contraception is an option if pregnancy is not desired. Emergency Contraception contains a high level of progesterone. This spike of progesterone in the body can prevent ovulation, or keep the egg from being released from the ovary. It is important to take Emergency Contraception as soon as possible after someone thinks pregnancy could have occurred. Emergency Contraception doesn’t work if the person has already ovulated. Also, someone can take Emergency Contraception up to 5 days after pregnancy might have occurred, but it is more effective the sooner it is taken.

Remember, hormonal birth control methods do not protect against STIs. It’s also a great idea to consider condoms and dental dams when engaging in sexual activities. If used correctly and consistently, condoms can help prevent pregnancy and STI transmission by up to 98%! Teen Clinic offers free condoms and dental dams.

Give Teen Clinic a call if you have more questions or would like to make an appointment! 303-442-5160