Dumb mistake

So I'm really bad at saying no and I hung out with this boy and we ended up fucking without a condom and yesterday's chance of pregnancy was 15% and today's is 27% (we did it yesterday) and he won't message me back but I have no money for plan b and I don't know what to do anymore. I'm really scared and can't have a baby rn but nobody can help me. Please help me with advice or anything on what to do next. Also I don't have a car to go anywhere

Update: since y'all wanna assume I said I'm bad at saying no bc I'm a whore well that's not why. I've been raped multiple times so I'm afraid if I say no they'll do it anyway more forcefully and might actually hurt me. Sorry I didn't explain that before. I assumed everyone on here would be understanding and helpful in a stressful time like this but apparently not. So as my mom always said if you don't have anything nice to say don't say it all.