Genuinely confused

Little back story, my partner & I have been together just shy of 5 years and have 1 child together. We havent had the best relationship, but one thing thats kind of always been good is the sex. We try to have sex at least a couple times a week. Its been close to a week since we had sex last. We sleep separate because i sleep with our daughter. I initiated it tonight after our child was in bed. Everything started as normal, but he was fingering me, until I "finished", which is weird for us in general, and then he tapped me and said "there you go" and motioned for me to go. There was no penetration. Just the "foreplay" on me. This is very very weird for us. Hes been acting distant the last couple days and then this. I just dont know if im overthinking it or what. I also don't believe hes cheating, as hes been at work (life360 verified) and wouldnt have the time or opportunity to. Im just kind hurt and confused and now every thought is running through my head like am i too fat or ugly and hes just not attracted to me anymore, or is he mad at me about something, or was he genuinely just not in the mood but didnt want to leave me hanging? Idk.