injured thumb

a week ago to this day I had a nasty spill on my bmx bike. i took a nasty face plant and messed up my thumb. i dont have health insurance at the moment but due to how baddley i hit my face and eye i went to the doc. i had it x rayed and everything looked fine and now my face is almost fully receovered aside from a busted blood vein in the white of my eye i can finally chew and everything now. But to keep cost down as much as possiable i did not have my thumb x rayed..the doc looked at it best she could and said there is not gaurentee but it is not disfigured or anything and it hurts quite a bit but not so much it effects me alot. it was swollen and still is just a little and looks a little bruised the first joint on my thumb by the webbing on my hand is a little sore but can move my thumb there with little pain though when i try to move the middle joint it hurs a quite a bit and can only get about a 1/4 the range of motion. and i get a pain accross the back bone in my thumb farthest from the tip of my finger is this the stiffness from me keeping it in a splint or is this a bad sprain? I cant put any pressure on it or grip or pinch anything with it yet... ive just been resting it should i take the splint off more or what? i wanna give my thumb more time atleast another week to see what happens b4 i go racking up another bill i cant pay. How can i check and treat this as best i can? (sorry for the punctuation and spelling im horriable at it i was a straight A guy in math and science nothing else hah )