First time

Hi I’m 17 and I have a boyfriend and I really want to have sex buuuuttttt.... I’m absolutely terrified of getting pregnant. Also I’m chubby so I’m super insecure about my body even though my boyfriend says he loves me the way I am anddddd it’s hard for me to shave as when I do it’s doesn’t look smooth and ughhh I just need help!! I already wanna lose my virginity !!