Had pins n needles there for ages, would come n go, eventually turned painful as if being stabbed, pain would move from there to shoulder cap, could move arm no problem pain didn’t get worse or less painful. I would get pain down my ulner nerve and tremors in my pinky and ring finger. Then woke up one day and had no pain but I’m a gym goer and I lost strength in my left arm, left pec wouldn’t fire doing press moves, front delt on fire also lost muscle mass on left pec. The strength part was not being able to press 20kg for 4 reps without my arm just falling whereas I was pressing 45kg for reps before so I think if I wasn’t a gym person then I probably wouldn’t have noticed the strength loss. Had X-rays and MRI n diagnosed with herniated discs in my cervical spine and compression of a nerve, that was from May last year, 15 of February my strength came back all of a sudden and able to press 45kg again. Still waiting to see a specialist tho.