Why do I feel gross after sex with fwb?

I (25f) have been participating in ENM for the past 2 years or so. My spouse (25 non binary) has been so supportive of me going on dates and having sexual experiences with new people. We agreed to try ENM because I have a high sex drive while my partner does now (due to personal reasons).

Anyhow, I've now had 3 sexual experiences with 3 separate people (not all at/or even around the sw time). Each experience has improved with each partner, but it still doesn't meet my needs. I mentioned in a previous post that I was seeing this guy and had my first experience giving head. Since then we've realized we want different things so we're just friends now.

I've been very self-conscious about having sex with these FWB but not enjoying it. Right after sex I'll be like "oh that was nice, didn't cum but it's ok" to then a day later feeling like my body was violated even though I consented to everything before and during sex. I don't know if that discomfort is coming from having sex with people I don't really know or if it's something like self-disgust?

Has anyone else felt this way?