I am wondering if my girlfriend may be pregnant. She just got off of the ring about a month ago and had a period right after that but hasn't had one yet even though it was supposed to come last week. We use condoms and pullout now and when she was on the ring. We took a test and it came up negative but she has been tired, nauseous, and crampy. Her breasts were sore but they were like that all through the duration of the pill. We really just want to know if there is a chance.