Spina biffida question

Patient: I am 32 have spina biffida, last light I coughed hard and something in my back popped. It burned when it happened. When I walk something in my neck crakes sounds like rice krispies. And my legs feel weak and my back feels like its on fire! Should I be worried? Ive had 3 surgeries to remove my tumor but they said its intwined in nerve endings and they cant get it all. My right arm is also weak. Weakness is a new thing to me. I havent had it since before surgery