ive had this for 7 weeks now and finally got an appointment on friday for the physio. It sounds the same as what ive got and it is carpal tunnel. She gave me a support brace to wear in bed and also during the day to keep my wrist straight. It will ease off once youve had baby although might not go straigh away as my friend still has it 4 weeks on after birth but it has got a lot better.
In the mean time while you may have to wait to see about it, sometimes putting a cold cloth over your wrist can help the tunnel artery reduce in size. Mine has been constant and has never went away even for a minute and even tho its not painful as such it is annoying and i keep dropping stuff and struggle to do up buttons and my bra and stuff!