Carpal Tunnel symptoms are a result of swelling within the sheath around your wrist that leads to compression of the median nerve. The median nerve goes to the last three fingers on your hand and causes numbness. This will resolve after you deliver. I do not find hand splints to be very helpful but you are welcome to see an orthopedist, preferably a hand specialist.
Swelling in the legs puts pressure on the nerve endings in the feet and as a result causes swelling, numbness and a tingling sensation. It will resolve after delivery.