My girlfriend and I had an accident and we bought Plan B. She was on birth control since September but she missed a pill 2 weeks ago and doubled up on the pill the next day; one in the morning for the night before which she missed, and then one at night to continue her regular dose. 2 weeks later, we were fooling around and we're not sure if I went in her or not and we may of had pre-ejaculate around and on her vagina. So to be safe we bought Plan B 19 hours after the incident. Her period is VERY irregular. She basically has her period everyday when she doesn't take her pill. If she misses her pill, she has her period until she remembers to take her pill.
Now, she entered her placebo stage for her pills for 4 days. Usually, she gets her period when she doesn't take her dose but she was late the first 3 days and I understand that could be because of the Plan B, but just today she woke up with her Period Symptoms she said she usually has of bloating and cramps etc. and then she ended up having what she claims to be her period with a normal flow and the usual symptoms she has when she has her period.
Is that most likely her period meaning she isn't pregnant? Thank you again Doctor!