Pain in side of stomach 37weeks

I’m not the one that is close to birth its my sister I just feel like something is off… She has been in an out the hospital with really bad side pain in her stomach and they said that she has excess fluid an said it was normal but y’all the pain gets so intense for her that she has to get on all 4s on the ground an cryin in pain…its to where they are giving her morphine for it and the morphine is barely helping and they’ve been doing this like at least four times within two weeks… Has anyone ever experienced this?…. They have also said that she was considered high risk because anemia, and one of her kidneys are swollen than the other, and they already took out the fact that she could be constipated… she is in a hospital as we speak bc She had the severe pain again🥺