Numbness, weakness and jerks in hand.

I have having muscle weakness, numbness and it jerk and spasm, feelings twitching, shocking when I keep the elbow on bench. I had done reports like Blood test MRI OF cervical spine and brain Blood report, NCV test, physical examination is also done but there is no evidence found of the symptoms. Having issue since long time and now the thing is that orthopedic dr is telling to do NCV focusing on ulnar nerve again and MRI too but currently I'm under debt and have no financial arrengement for anything also I'm able to control the hand. It's not painful too just jerks, spasm numbness and not able to hold the things for too long so can i skip the diagnosis and treatment for sometime, i mean is it critical or symptoms get worst ?? Like I can do it whenever I'll get financing stable so does it work like that ??? Or i should do it on immediate basis.