Pregnancy? Abortion?

My boyfriend thinks I’m just freaking out about this. But I’m regularly on the pill, and I did forget to take my pill for a few days this month. I don’t remember how long, maybe 5? Anyway, I had a withdrawal bleed from Wednesday the 24 of July to Monday the 29. On Friday the 26, my boyfriend and I had sex with a condom while I was withdrawal bleeding, but the condom slipped off inside me and we did not realize that till we were finished. Now I am of course taking my pills again, and have been since Monday, but I am sooo scared I will be pregnant. I cannot have a baby, I’m 18 and am going away to college in a few weeks. I don’t have the money for an abortion, and I’m not sure if I could mentally handle that right now, but I know I can’t handle being pregnant and having a baby. Does anybody have any insight? My life is supposed to be just beginning with college and everything. I feel like an idiot for missing my pills.