Hands falling asleep when asleep?

Suzie • First time pregnancy my husband and I have been trying for a long time so I'm very thankful/nervous about it!
Hey mamas! 
This last week my hands have been falling asleep when I am asleep/wake up to use the bathroom. I've read to only sleep on your left side but I usually have to switch from left to right about 5 times during the night or my leg starts hurting. 
Does anyone have any suggestions? Should I start putting pillows around me to elevate my hands/arms? Or is it my torso/chest that needs to be elevated? 
Thanks for any suggestions!!!!