ive got carpel tunnel (once you have it youve got it forever or so i was told) it hasnt flared up while im pg thank god, coz i know how bad it can be my suggestion, get a splint, even go to your local chemist and tell them you have CT and they'll know what you need to use. its basically just to keep you wrist straight so you dont bend it and squish the nerves. it can be very painful, but i found if i didnt get it while i slept then that next day wouldnt be so bad.
Good luck.