ER visit = baby B kidney killer 29wk

Okay so I went to the ER because my back has been killing me on the left side and I just thought it was my back. Turned out that it was my kidney. It wasn't an infection. Baby B has decided to squish my kidney to the point of no circulation and my kidney has been building up water. I've been in pain for the last week and it was so brutal I had to go to the hospital... it was 3 days in until they finally figured out what was wrong. Has anyone else had this problem? They can't do anything about it. So I get random horrible pain spouts in my kidney... no medicine to stop the pain or anything. Someone help...