It's a girl thing!

It's common for women of all ages to experience cycles at seemingly "irregular" times. Unfortunately, most doctors are so intent on make women "regular" that they don't pay attention to the fact that women who do not have monthly cycles are as regular as those who do. And don't try to "regulate" your periods by getting on birth control - that is a very dangerous game. Birth control doesn't have a long history, therefore, doctors really don't know much about it. Use it for what it's is meant for and nothing else. Taking it potential cause miscarriages (like in my sister). As far as the pimples go, you're young and that's just your hormones girl. It could take up to a couple of years for the pimples to die down. Of course, you should always consult a doctor, preferably a female OBGYN for any issues you're having.