I was prescribed BIrth Control Pills for the first time in December. I hated them so much that stopped after just two weeks. I had a withdrawal bleed a couple of days later, and now it has been 2 weeks, and I have not had a period after that. I have always been regular before this. I do not when my next cycle will arrive, and what happens to subsequent cycles? I am afraid I have messed up everything. I took the pills for only 2 weeks!! Help!