Unprotected sex while fertile?

I'm 16 and I try to track my fertility extremely closely but lately I've been forgetting to check it, and I didn't even realize I was ovulating when I had sex with my ex last night. He pulled out, but then he said he might have gotten a little bit in me. I know it's extremely stupid and reckless but it just all happened quickly. Glow says I had a 27% chance last night, but I haven't had any discharge or physical signs that I'm ovulating yet, besides my breasts swelling slightly. Usually when I ovulate it's a lot and I can feel the discharge, but I haven't had any of that yet. What are my chances of being pregnant?