Hi, this is for my mother, she's in her 40s and for about 2 weeks her back has been hurting and she has lots of knotts in her lower back. Her blood pressure went up and she started feeling nauses, she's gotten very cold and she's gotten pale for a bit. And she sometimes she wants to vomitt bt she can't. And she can't get up or bend down because of her back and she's been sleeping a lot. And sometimes her left arms falls asleep and her arm turns yellow. She has her appointment in 2 weeks I think bt I js want to know wats wrong and how I can help thank you I will appreciate it

Take her to an Emergency Room. If she's running a fever and needing to throw up, two weeks is too long. She might have a bad kidney infection, or a liver issue but I can't say, as I'm not a medical professional. Just good old friendly advice; take her to a hospital