Anything by wave_obscura (SPN). Seriously, she's excellent and writes copious amounts of h/c and disability fic. chiiyo86 has write some cute bits as well (including Sam and Dean getting quarantined for contracting swine flu :P) and I love roque_classique's Drive 'verse (in which Dean's leg gets permanently injured just before the pilot occurs; the fic re-envisions that story).

I had my wisdom teeth out a few years back. Redheads like me are notorious for having complications (not generally serious ones, just nuisances) but the doctor really knew what he was doing and things went off without a hitch. I woke up and it was done. I hope it goes as well for you!