Nelie,
I agree that this is something to take to the DR...I don't have carpal tunnel and am not qualified to give advice about it.
I can share this with you, though..
I do not have wrist/ forearm probs but there came a time (after training for awhile) when my forearms could not keep up with the strength of my back and I use wrist straps (that you wrap around the DB, BB or machine handles) so I am able to train my back to failure without my forearms giving out first. I also train my forearms and wrists to keep them strong. Doubtful this would help with pain though...
Good Luck

XoXO
L2L