Am I way over thinking this?

So my bf got up around 4:45 to use the bathroom (not too unusual), anyways he came back super horny and we had sex. After a while he got off and laid down, he said he came but I’m like 99% he didn’t like I would know that. I even went to the bathroom and legit no cum came out of me, I was on my phone and I went through my search history (his broke so he borrowed mine) and I looked in my history and he was on a girls profile on FB who he isn’t friends with but is friends with her family. Anyways he was looking through all her pics, when I asked him about it he said she’s a family friend which is believable because he follows her brothers. Am I over thinking this? Part of me feels like maybe he jacked off to her pics? And that’s why he came horny to me but didn’t cum? I mean I hope not because based off her birthday on fb she’s 16 in a day. Ugh maybe I’m overthinking this, maybe he thought she was older? I’m super pregnant so maybe it’s just my hormones? When I asked if he came he said he did but again he legit just hopped off and laid down and I didn’t have cum in me? Ughh 🤦🏻‍♀️😩