Hey man, first off, you're not that small. It's a bit small, but not on the scale of a micro-penis or a two or three incher ... You're only like an
Inch or so shy of the mean, and that isn't much.
I'd say keep doing what you're doing as far as stretching -- use an ADS, hang with weights, but don't hurt yourself -- and plan on doing it for life. It's my opinion that this is something more akin to gaining flexibility or muscle: you have to keep going to maintain (although some may disagree with this here).
Other than that, the only thing that you can do is rock it. Women respond to confidence, and many are not very good judges at
Dick size. Use it like you're proud of it and there's a good chance she will respond in kind ... if she doesn't and she tells your friends, then own it. Be strong about it. Openly admit it if you have to. Take the power away from anyone who may want to use this against you. People tend to perceive you how you perceive yourself.
It's my impression that it's better to get laid, be confident in yourself, and deal with whatever that may bring than wallow in celibate insecurity. This is easier said than done, but fuck it, no matter what happens you can think "Well, at least I fucked her." You're entering the sexual prime of your life. Enjoy it.