Did he just....??

So last night I had the most amazing sex with my fwb that I’ve had for a few months now. We usually dontwear condoms because we only really sleep with each other and so at the end he bent me over and he was going and then he quickly pulled out and came all over my back which was fine but then when I got up I felt like something come out of me just alittle and I couldn’t tell if it was lube or me or if it was him because he came a ton on my back.

Should I be worried he didn’t say anything like that he may have came in me alittle because I’m sure he doesn’t want kids. If it was the end of my cycle I wouldn’t care as much but I ovulate in 3 days according to glow and I don’t need a pregnancy I start college in august. If anything I can get an abortion but I don’t want it to come to that. What should I do?

***EDIT*****

Just got my period, all good