Severe pain. With tearing sensation!

I suffered by sleep paralysis 4 years ago. When tried to wakeup putting hard effort I experienced like some thing tearing in my left back bone muscle. Then I took altraday and muvera tablets on prescription of my doctor. But pain like muscle catch in left back repeated often. MRI was normal. After a eight months my hand little and ring finger pain begun with mild numbness and sensitive to cold water. My NCV , scan tests was normal. Doctor and me suspected for carpal tunnel syndrome. Then I started various gabapantine medicines. But it helped for only some time. Now a days I am experiencing cotinuous pain with mild numbness in ring and little fingers. Pain intensity is high in left hand. Pain goes after gabapantin tablet and starts again from next day noon. Severity is whenever I put pressure during bowelmovement or gas pass I am experiencing severe pain in left fore finger and middle finger. Pain comes like passing though left shoulder to said fingers with tearing sensation