Okay so my girlfriend just started taking birth control last month, she went through the whole pack and all the placebo pills and started her inactive pills again yesterday. She has all the signs and symptoms of a period and is cramping very bad, we also had sex recently, and she has not gotten her period at all. I don't know what birth control she is on but I am worried because she has not had a period at all this month, is this normal in the first month of taking birth control? Is she going to get a period at all this month? Thanks.