I’m scared to have sex!!!!!

Mo

Hi I’m 17 years old and I’m scared to have sex. Everyone my age has had sex already, when my friends talk about having sex with there boyfriends or girlfriends I get kinda embarrassed because I’ve never done it. They talk about there favorite positions and I don’t even want to show anyone my own body because I’m scared that if I show someone before we have sex he may just walk out on me. I’m scared that I’m going to be 30 and never have sex because I don’t have the guts to even start talking to someone because I’ve never done that either and I’m scared to fuck it up. What should I do?