Could this be carpal tunnel?

Both my index and middle fingers on both of my hands are getting swollen and tender and I cant close them all the way, my ring finger and my thumb, again on both hands feel kind funny in a stiff way. And it kind of hurts in my wrist when I try to write. I work with a computer and I play the bass guitar? Could I possibly be getting carpal tunnel or something like that? Other then wearing a wrist brace, what other steps could I take to help prevent it (if its not too late already) or ease the pain up because now I cant even play my bass.
I am unable to go see a doctor at the current moment due to no health insurance