(Concern) The pain in my left shoulder hasn't gone awayㅠ

A few years ago, I was involved in a traffic accident while driving.

There was a tear in my left shoulder's rotator cuff at that time, and I suffered for several months.

The area that was ruptured due to hospital treatment has healed and I have been doing well, but my arm has started hurting again since last night.

The pain is so severe that I have difficulty turning over and lying down even in my sleep, but after going to the hospital and getting an MRI, I was told there is no abnormality.

Taking painkillers reduces the pain, but after a few days, the pain comes back.

So I started Pilates, and I feel like my shoulder range of motion has slightly improved and the pain has somewhat decreased, but I still experience occasional pain.

The hospital says that stress or inconvenience during work may cause discomfort...

I can't just take medication without a plan...

It's quite a dilemma.