Okay im 16 and for past 2 years my period was always constant and i never would experience pain, or cramps. About 3 months ago i have been on very strong antibiotics becuase of some infection in my blood and as soon as i got off i got an yeast infection that i treated with over the counter medicin. As soon as i was done i got my period which came 10 days earlier but lasted as usual and was a usual flow. So i was happy everything was over but yesterday i got some brown discharge which looked like old blood but again im expecting my period only in a week, so today in the morning i woke up and it does look like my period came early again, the problem is its heavy and it comes out in huge dark red clumps which really worries me. I also have cramps but the pain isnt deadly. I really dont know what to do. Their is something wrong with my horomones. I am sexually active.