Scared of Hookup

Ok so I need some advice. I have been sexting this guy that I’ve known for a long time (10+ years) and we’ve discussed getting together to hook up (I know... kind of slutty) . I finally feel like emotionally I’m ready to have sex again after being 8 months post-partum. However, this will only be a hookup and I am TERRIFIED to get undressed in front of him. The body I used to be confident in is gone and I feel so unattractive. I’m about 30lbs over weight, stretch marks, hanging belly, etc.

Should I go ahead and go through with it or wait until I feel more confident in myself? I just don’t want to make a mistake but I miss sex!! Lol