I am 22 years old. I made out with my bf second day after my last period. He didn't cum inside of me, but i'm not sure if he's precum entered me. He tried to penetrate me for sex, I was sore and hurting, so he stopped. My next period is due in two days, but i've barely seen signs for it. I've taken 3strip test, two came back negative (took them in the afternoon), last one had another line asides the control line. But it was so faint and colour, like it was almost not there. Couldn't even capture it on camera. I still have a photo of it. After a few hours (3), the line was gone. Could I be pregnant?