Embarrassing

I have a really hard time relaxing when having sex cause I feel like I’m super ugly down there. It makes me physically sick thinking about the fact that they can see my mainly my butt but also I feel like my vagina is ugly and don’t even get me started on oral. I’m just not sure how to feel more confident….its been like this with any partner I’ve had and it rlly frustrates me cause I love sex and I wanna give them they best of me / all of me but I cant even do reverse cowgirl without feeling like my chest is gonna explode. I keep myself clean and I’ve never had any complaints but Its frustrating not being able to enjoy getting oral etc cause I feel so disgusted with myself. Ik I should probably talk to my partner about this but I’m embarrassed 🙈