Irregular Periods & Birth Control: Potential Pregnancy Concerns?

Question
ok so my girlfriend was put on birth controlle because her piriods were very illregular. shes on her second monthe and on the first month she started early on her piriod during  the inactives and bleed for 2 weeks. this mont the was over by 1 to 2 hours takeing a few pills and we had sex but the only way any thing happend is if a pre ejackolated.she took her first inactive tuseday night and it is now wedsday morning... should i worry about prenecy or could this be normal? could it be possible she may start after the inactives are over or could she just plainly missit. she has been under alot of stress too and hasint been sleeping good.plz help!!

Answer
She is under a lot of stress and the way you write you seem to be under a lot of stress. It is difficult for me to figure out what you are asking. You really don't give much information. Calm down. Take a deep breath. It would be better if she was asking the questions.