Loosing weight causes lots of pain

[Sharkbev]

Has anyone ever heard of this? I am a plant based vegetarian, have been for the last year, so I understand about detoxing while loosing weight. But this is different. When I loose more then 20 pounds I start having sever muscle pain in my upper back and I get sciatic pain. If I do pain reducing exercises, that usually work any other time, the pain gets worse.
I never took drugs when I was young so I don't understand what is going on with me.
Any ideas would be greatly appreciated!

 

[Mad Max]

It's better to see a doctor about severe pain, rather than asking a bunch of unqualified strangers on a forum who don't know you to 'guess' at a diagnosis.

Exactly