What to do if I dislocated my finger but I'm not quite sure?

Go . Go see someone, preferrably a hand surgeon 1. You need to make sure the tendons and ligaments are ok. The joijt may seem lined up but still be subluxed or slightly out of alignment, the tendons that move the fingers could be torn and obscrued by the swelling and the sense that it moves, or you make excuses for a stiff finger due to swelling and it is really a tendon issue 2. You need to learn how to get your motion back in an unfettered fashion, depending upon the injury 3. You need to rule out a fracture that may have occured even though you feel it was "just a dislocation". Good xrays after the dislocation are equally if not more important that the before.