I just want to reach out and see if anyone can help or can relate.

When I am tense and stressed I feel a lot of my aches and pains in my neck,  shoulder and jaw (TMJ). 

When I have full blown anxiety attacks though (e.g. I just had to get a blood test and I nearly passed out/vomited) I get lower back spasms that are so bad they make me clammy and want to throwup. They last maybe ~20 minutes but its the most pain I have probably ever experienced,  if it lasted longer I would consider a hospital.  My pain tolerance is actually pretty decent but this is so bad I cannot move or do anything 

Then, after about 20-30minutes it just goes away completely. 

I would honestly think I had a kidney infection or something seriously wrong if I hadn't been experiencing this most of my life