My period ended on Friday, and I had unprotected sex on Saturday. It was my first time but I didn't bleed, I had a strong feeling that my hymen didn't break. Besides, my partner didn't ejaculate inside me. I took Plan B right after we were done, but 30 mins later we did it again, I still didn't bleed and my partner still didn't ejaculate inside me. It's now Sunday morning and I think I'm having abdominal pain. I'm planning taking another Plan B for 3 days from now on. I've never had birth control pills, so if I don't take Plan B again, can I possibly get pregnant ? I've read about Plan B but I'm so confused right now. Please help me.