Never in the mood for sex? Low sex drive??

Me and my fiancé have an 11 month old together and ever since I had her I’ve been put off sex! Our sex life used to be AMAZING but any time we do it I feel like it’s more of a chore? Like I’m just doing it so he can cum but I don’t get any pleasure out of it.. Ever since having my daughter it has also felt like I’m losing my virginity all over again every time I have sex and I was thinking maybe it’s something to do with the fact that I had to get stitches.. has anyone else had any experiences like this or have any tips I could use?