I'm 38 weeks and 2 days and I have some weird pains on Thursday and again today. Very sharp, stabbing pains in my lower belly, when lying down and trying to move from one side to the other. Lying on my right side was just impossible today, on the left I finally settled. I was fine on the Friday (weird right?) and fine when standing or sitting, but I have to sleep at some point!
I'm 38 weeks too and get this at night. Seems to be on days when I've overdone it a bit with lifting and bending. Haven't been so bad today. You could take paracetamol if it's stopping you sleep or I find a glass of wine helps would rather have a small glass than take tablets!