I have (intermittent) arthritis in my hands - it pre-dates my pregnancies, but sounds a lot like what you're experiencing. It doesn't cause pins and needles though - but carpal tunnel (which I also have - although i've been assured it will disappear after birth) definitely does. I find if I sleep with my carpal tunnel hand up on a pillow it helps; otherwise I wake up with a completely numb hand. Maybe what you have is a combination of things? Sounds like you've not got long to go, so you could just wait it out and see if it goes away. Good luck!!