Kidney pain?

Cherry
Let me try to describe this the best that I can :) middle of my back, only on the right side, right under my shoulder blade I get this pain that's been going on the last month or so? My ob is always rushy rushy so I always forget to ask him about it because of course at my appt it doesn't hurt lol so anyways it used to be maybe once or twice a week I'd get said pain and I would get in the doggy style pose but have my butt in the air and chest on the bed and the pain would subside, now it's been coming everyday and today is the first day I've had to take Tylenol for it. I have a very high pain tolerance so when I take any kind of medication it must be pretty bad. I know I know call doc and such but I wanted to see if anyone else had this problem and it was just pregnancy related (4th Baby, never had it with the other three) or if I may have a blocked tube on that side or something. Baby boys back is on left side so I know he's not favoring the side that's hurting. Thanks loves