I think this prick came in me

So me and this guy I’ve been seeing have always used condoms but last time we didn’t. We are both clean but I still wanted him to use a condom because I had missed a few birth control pills, but he told me in the middle of sex he was not feeling anything, and he did keep going soft. I gave in like a fucking idiot but I’m sure some of you know that pressure? 😰 He promised he would pull out and he did and then the next time in the morning after a while he seemed like he was coming in me, when he comes he usually suddenly starts thrusting slowly and kind of lay on me a bit, which he did, then got off me and said “I’m too tired” and was just done... I’m like you didn’t cum in me did you? And he said no and seemed really honest about it but... I just don’t believe him. I asked him twice I was so not believing it and he said no both times. Should I just stop seeing him? Pls no judgement I know I’m an idiot thanks.