I used to only sleep on my back. I'm 18w now and have been trying to sleep on my side and I literally cannot. I start off on my side then I'll wake up on my back and have to roll over. This happened all night long which caused me to toss and turn all night. So last night I tried sleeping with a pillow in front of me to support me on my side, but now my shoulders and neck hurt TERRIBLY since I'm not used to it which again caused me to toss and turn all night :( Any ideas on what I can do? I'm exhausted and desperate.