Boobs and Body Pillows

For the first time in my life i have real cleavage!! It's so exciting! I'm sure i'll be eating crow in a few months when they're ginormous, but as someone who's always had small boobs and had to use a pushup bra, this is fascinating stuff. Coincidentally, i now have a new problem. I wake up every single night (in addition to pee breaks! geez) because my arms or hands are numb and tingly as if they've fallen asleep. This appears to be a common phenomenon according to others on the babyboard, but the only reason i can think of for it happening so early is because my boobs are sooo sore that i sleep on top of my arms to keep my boobs from getting squished into the bed. I'm thinking about getting a body pillow to see if that might help. Any experiences or suggestions to share?