Hi. I hope it's okay to make a comment tree days later.
The whole penis-size insecurity, has nothing to do with your actual penis size. It's a psychological thing, based on a fear of not being good enough. Like a person who feels they're too weak, too dumb, too ugly, etc...
Your penis had the exact same size before you felt insecure, so you need to figure out where this fear comes from.
In my opinion, the only people with a valid reason to feel bad about their penis, are people who have a micro-penis. Because it's (like?) an actual medical condition, that makes them unable to penetrate.
Still, there are some other things you should consider when you feel insecure. First off; there's this obsession among lots of men, about just penetrating, moving around, and wanting this be enough to bring women great fantastic orgasms... It's a crock of shit, regardless of how huge a penis is.
Second; the fact that you're a virgin is totally fine (lots of women have zero issues with it, just like lots of men have zero issues with a girl being a virgin). The downside to it is though, that you don't have a realistic image on how women really are, in bed. (less shallow than you think)
You know full well your size isn't your choice, yet you hate it and you're convinced women out there won't enjoy sex with you, eventhough you've never had sex.
You've been conditioned by this age old idea, that only 'tightness equals real pleasure', which is only achieved by having a big dick, eventhough women differ in size themselves. Added to that; vagina's can pass a whole baby without breaking, yet I've never seen a man with a penis the size of a baby... So considering that, all men kind of have a small penis. (sorry for being so blunt).
You've become aware that your penis is smaller than... average? Guys in porn? Your friends? And now you feel insecure... because you compare yourself to other men.
Sexism creates ideas that both men and women aren't good enough, if they don't fulfill certain stereo-types. (guys need huge dicks, women big boobs... stuff like that) But what it has also created, is this idea that all women are shallow when it comes to guys and sex. Believing in those things, is what will really make you unattractive, not just to women.
If you're looking for sex, just for the sake of ridding yourself of this "terrible stigma" that is your virginity, don't. You won't gain anything from it that you don't already have, and it'll probably confuse you because you'll have gotten laid, yet you'll still feel like shit.
What you really want is to connect with someone, and that takes way more than just the physical act of sex.
My advice is; If you're horny, masturbate, without thinking you're somehow wasting your best years.
Anyways, if you're still reading, cool. Your real problem is kind of thinking women are shallow. They aren't, at least not by default. And the one's that are, you don't want a relationship with, even if you had a big(er) dick.