When you lose your virginity or have sex in general does that delay your period?
But changes in your period from month to month are normal, and lots of things can cause changes to your period. Some months you may have no period, or have it at unpredictable or irregular times — this is especially common during the first couple years of getting your period. Some types of hormonal birth control, like the shot, implant, and IUD, can make you get periods less often or not at all while using them. Dieting, exercise, illness, and stress can also affect your period.
If you’ve had unprotected sex and missed a period, the only way to know for sure if you’re pregnant is to take a pregnancy test. You can start by taking this quiz to see if it’s time for a test. If you’re not pregnant and want to stay that way while having penis-in-vagina sex, your best option is to use birth control. You can take this quiz to help you figure out which birth control method might be best for you.