I would like to have intercourse but I feel too ugly and disgusting

I'm 18f going on 19 real soon. I would like to have sex before turning 19, as I feel left behind by all my friends and a bit jealous. I know there isn't much of a rush do to it, but my problem is I feel too ugly and overweight so no one would do it with me. I just wanted to confess since I feel like I can't to anyone else, I'd feel embarrassed to have to face friends afterwards