Back pain

I'm 37 weeks today! When I woke up I was fine but I've recently started with really bad pain in my upper back. It's right in the middle of my back, just in line with the bottom of my shoulder blades if that makes sense. I just can't get comfortable at all, baby seems like he has literally filled my stomach up today so however I sit or move is hard and uncomfortable. I also have lower back ache which I have had for a while now and recently started with pain in my pubic bone but only when I move but baby still hasn't dropped yet. Any ideas on how to help this?