Nerve pain in shoulder and elbow...HELP

has anyone ever hurt the nerve bundle in their shoulder?

I have done something to mine and it is making my entire right arm miserable. Here are my symptoms...
-Tenderness in the shoulder. Can't carry purse on that side.
-"zingers" of nerve pain that run from the shoulder down the back of my arm to my elbow, this is intermittent, but man does it hurt
-wrist and hand pain, ache that is pretty much constant
-weakness in that hand, I have to have my 10 year old open bottles and jars

This has been going on for over a month. I have taken it easy on the arm. I have been babying it for sure, but not 100% use free.

I have stopped my daily push-up routine, but still do a daily elbow plank. I am also doing some tricep work and bicep curls. A few extended plank exercises, etc.

Any advice?
Should I see a doctor? If so, what type?
Should I 100% stop any and all arm exercises?

Here's the other thing...I am afraid to break my routine. I started in MFP in June. That is the same time I started working out. I do HIIT 6 days a week and have totally transformed my body. I have gone from a size 14 out of shape 195 pound 40 year old mom to a size 2/4 135 pound weight lifting, HIIT, healthy, and fit mom. I am so scared to get out of my routine for fear of falling back to the old me.

Please advise! Thank you!