Pregnancy pillows are awesome. They're pretty expensive, but definitely worth it in my opinion. I think I used mine pretty early in my last pregnancy the last time, but haven't broken it out yet. I don't have a problem getting comfortable, I just can't sleep for more than 6 or so hours. I have insom-nom-nom-nom-nia.;)
it depends on the way you sleep I have the same problem and I'm 16weeks pregnant and it's very hard for me to sleep I sleep on my right side but I have to sleep now on my left side.
Not sure whats a great position to sleep in. .but I do kno if u put rice in a tube sock an heat in the microwave for your back..u will b in heaven..