Sex doggy style

So me and my boyfriend only recently started to have sex. We’ve done missionary a lot and recently introduced cow girl. I know he’s going to want to do doggy style next.. I know I will too but I’m really insecure about my body. I’m afraid he’ll see my belly rolls. I’m also scared my butt hole might be big and he could think I did anal or something. I also have a lot of hair on my body and I try to get rid of it but I can’t reach the hair on my lower back😪. Any suggestions? Tips? Tricks? Anything?