hello. my gyno prescribed mononessa to me, and when i told her that it was the last day of my period to start right away. so i took it the next day. but when reading the instructions it says to start on a sunday after you start your period. im confused. i'm also starting to think i may start my period a few days before my placebo pills which will begin in about 4 days. is it safe for me to have sex with the way i began taking the pills. also is it safe if my period comes early? the doctor told me to wait until i finish a pack, so i have. but now im worried about even after i finish it whether or not it is safe.