My boyfriend and I had sex about a week ago and we used protection, but the condom slipped off a little bit while he was still inside me, and we didn't know so he finished inside me. We didn't realize until he pulled out. The next day I took a plan b pill. I'm still freaking out about being pregnant, I may just be paranoid, but I'm really scared, and worried. Please help me ASAP. Thank you so much.