I'm on birth control and have been for 4 months. I'm on the last 5 pills of this month. I had unprotected sex with my boyfriend on Tuesday, he ejaculated in me. I had a few cramps not too sore but on Saturday evening they were bad, I got up from bed and I was bleeding. Today is Monday I've been bleeding 2 days now. My period has come 5 days early on the pill. Why? I have never missed or skipped a pill or taken one late. Am I pregnant?