Poor thing! My older brother started going bald when he was 22, and my younger brother has had a receding hair line since he was 19.
If it makes you feel any better I know that some women don't care...some even like it.
I have dated two guys who were really bald (I mean no hair at all on top) who were both in late 20's. And my boyfriend now has quite a bit of thinning going on (though I would never tell him).
So, trust me having a receding hair line is not the end of your dating life.