I took Plan B 2 days before expected ovulation day. My cycle is 25 days and after Plan B I got my period 2 days before, on cd23. It was consistent with my other periods. Lasted 4 days and was dark red mucous blood. The only difference with my cycle was that I had stronger cramping than usual and stronger PMS. The symptoms went away after periods came. When do I expect my next period? I have also added weight and feel bloated nowadays. Is it possible I am pregnant or is it just my hormones trying to return to normal? I feel normal though.