I ran out of my BCPs and have been off them for about 2 weeks. My doctor prescribed new ones but I'm not supposed to start them until my period starts again. However, I didn't get the chance to tell my doctor that I was off the meds. So can I start taking the pills when I expect to start my period rather than when it actually starts because my periods were fairly irregular before the pills and I don't know how my body will respond to being off the meds and I want to regulate my body again.