injury?? or not?

I didnt know where to put this so i tried some different places. I know none of you are doctors (well i dont but i guess not haha). After working out a bit more than usual, my thumb feels weird. Ive been doing a lot of pullups lately so i guess the stress is because of the grip. What i wanted to ask is, if any of you have had stuff like tendonitis in the thumb and what it felt like? I cant squeeze my thumb against my palm without sharp pain, and when rolling the joint, it doesnt go entirely smoothly around the bottom part (when i roll it towards the wrist). It also feels like i have something between my thumb and my index finger when i squeeze them together. Like something is on that thin skin between the fingers. I just wanted to ask to see if it sounds like anything that requires some support like a little splint or whatever. There isnt really any swelling only a VERY little at the base of the thumb. Not really noticeable
Thanks in advance
(im a female teen - my profile sometimes says otherwise)

by Rebecca2412 via Bodybuilding.com Forums - Female Bodybuilding