I'm on the pill Minesse. Today a week ago I had intercourse unprotected. However I woke up this morning with heavy cramping that feels like my menstruation cramping. But it's not my menstruation, cause I had my menstruation 2 weeks ago. However when I urinate there's pinkish blood. Is this a form of implantation bleeding? Also do keep in my mind I forgot to drink my contraceptive pills on 3 occasions.