Virgin

Hey guys! I've just turned 18 and I'm still a virgin. There's a guy that I want to have sex with but the only thing I'm scared of is getting pregnant... I'd obviously use a condom but I'm scared that it wouldn't be enough... I know about other methods but my mom and dad are pretty strict so I wouldn't be able to get them without them knowing. Also, I live in a small town so they would definitely end up finding out, what should I do? Would a condom be enough?