Could he of came?

So this morning my SO woke me up really early this morning to treat me to some love. The fun went on for 20-30 minuets maybe even more. I got 2-3 good Os but he could not seem to get off. I feel like he might of got off while giving me some love. I have never done sexual stuff where he finishes in me so I wouldn't know what it feels like. I have been on depo for 9 months now so I am not to worried, but I like my SO to always have a happy ending. It took me 2 hours to go back to sleep this morning thinking what if he did and didn't tell me or maybe he got off a little while before coming back to wake me. I just know the last two times prior to this morning were close calls.