I'm 37 weeks as well. And I had to sleep on my recliner chair and I had a good 3 hours. I have to watch tv or something then fall asleep but then I have to pee. And right now he is in my pelvis and I'm getting harsh period cramps. So I've decided I can not sleep in my bed I just can not have a good sleep.
This could be tmi but it helped with my last pregnancy i had the same problem but once ur comfy either try having sex but if thats too much try having a "solo" session with ur self if ur in the mood it could help
I know how you feel Im 37 weeks and this is just unbelievable even through out the day if I sit for to long on a chair I need to get up and strength but mostly at night ive been getting alot of cramps it doesnt matter witch way I sleep I still wake up sore as hell then I have to pee. I cant get back to sleep but before I go to sleep its always latley been like 12 or 1 at night its *****
Try watching boring tv, it works for me, or warm milk, maybe reading? I hope you get some rest =)