Possible Nerve Pain

I am a 19 year old male. I am very active. I have been dealing with back pain that began in my lower right side near my hip. It spread up to my shoulder area. It has been getting worse over the past month or so. I also (not often) have felt sharp shocking pain in my traps when doing lateral raises and rows in the gym, which I believe is nerve related. I have slowed down my strength training, but am considering stopping for now as it seems to get more painful the day after training. I think the pain originally began from prolonged sitting during my college classes this summer.

Yesterday, I saw a physician who said that there was no way my back pain was nerve related because it didn’t pass any of the tests he performed.

My pain is usually present no matter what I’m doing, even just laying down. It is localized in my shoulder blade area and lower back, always only my right side. In my arm, pain shoots down to my pinky finger and sometimes causes numbness. In my leg, pain shoots down, but not as severe as my arm.

No amount of stretching or massaging ever seems to alleviate my pain.

I was prescribed a 15mg dose of aspirin and physical therapy, however I will be doing physical labor for the next two weeks at least, and am not sure I can regularly attend the therapy.

Is there anything I can do at home? Should I stop working out?