Is it normal to be 19-20 and never have had a relationship?

So, I'm 19 years old, about to turn 20, and I've never in my life had anything close to a relationship. It makes me feel really insecure about a lot of things, like how interesting I am as a person and whether or not if I'm ugly, (personally I don't find myself to be attractive). But I always get really depressed over the fact, especially since I'm always seeing my friends and other people having relationships, dating, hooking up, having regular sex, etc. And I'm just here...alone. It makes me feel so behind everyone else and very, very unwanted by women in general. I'm just so afraid of ending up alone, like being an overweight 20-something living in some gloomy apartment by himself ordering pizza every night. That's no kind of life! So my question is is it normal to have never been in a relationship at my age? And is there hope for me? I don't want to be alone forever, it's one of the worst things I can imagine happening to my life.