So I got done with my period and kept forgetting to pick up my pack of Birth Control at the pharmacy. Before I knew it, 2 weeks had gone by so I picked it up and figured I would just start this pack after my period comes. Now it's been about 3 weeks (since my last period) and it still has not started. Should I just keep waiting? Is there any reason to be worried?? Or are my hormones all off, etc because I didn't start that pack?