Help?

Jordan

As of right now I am 87 days late for my period. I am 14 years old and I'm a virgin. I don't know why this is happening. My periods are very gappy. I usually only have them maybe 4 times a year. I've been thinking about starting birth control to help regulate my period. But so far not having my period a lot has been good. I'm never in pain or anything. Should I just leave everything alone or should I try and do something about it? Please help...