I've been on nuvaring for about three months. I didn't have a period in November bc I opted to keep my ring in. The ring fell out so i had a period on December 6th that ended on the 11th. I had unprotected sex with my boyfriend on the 14th. He pulled out. The next day, the 15th I put a new ring in. I've been cramping especially today. Today was supposed to have been the day I ovulate. Could I be pregnant?