i hurt my wrist about 2 1/2 months ago...?

and went to the hospital with it about a month ago. they said it was sprained and put an ace bandage on it and told me to rest it cause i had tendinitis. i have a 6 month old little girl, who does NOT allow me to rest anything on my body.. ESPECIALLY my wrists! it seems to be the same if not worse..if i bend my thumb back even just a little it feels like it snaps out of place and i have to painfully push my thumb forward for it to go back to where it feels in place. if my daughter jumps or wiggles and it moves the wrong way my wrist goes out and i cant hold her with it,,,its hard to change diapers. and thats not working seeing as how im the only diaper changer.

is this really a sprain..i honestly dont remember doing anything to hurt it when it started..im not very active..and i didnt do anything to hurt it..unless holding a then 15 lb baby and changing her diaper would have GRADUALLY sprained it.should i get a second opinion?

how much longer is it going to be like this..i NEED my wrist NOW. ace bandage just made it hurt worse and made my fingers hurt really bad. ughhh im going crazy.