I'm 15 and I have an irregular period. And I haven't had my period in a month. Me and my boyfriend have had sex but we used a condom and it didn't break. Could I be pregnant? I did have like a brown discharge for about 3 days and then it went away. Could I be pregnant??

Anytime you have sex, you can become pregnant. Birth control only lessens the odds, but it is still possible even then, so do keep that in mind.

Since your periods are irregular it will be difficult to use the lack of one as an indication of a possible pregnancy.

You have a few choices: 1) decide to stop having sex until you know you would be able to deal with a baby physically, emotionally, and financially (obviously the best choice because then you never have to worry about it), 2) use another form of birth control along with the condom so you have some back-up, 3) make sure you use the condom correctly... you'd be surprised how many people don't... no entry of a penis unless a condom is in place, this includes during any foreplay. Too often people think they only need to put it on just before ejaculation. 4) watch for other possible pregnancy symptoms, and take tests every now and then, since you can't really know by your period showing up or not if a pregnancy might occur