Apple Watch pain in arm and wrist

I purchased an Apple watch Series 9 four month's ago from the Apple Store and wore it every day. Now I have developed left arm & wrist severe pain so have had to wear it on my right wrist which feels wrong.

I am not in the UK right now so have been unable to visit my doctor. The pain has lasted now for three weeks. I intend to visit my doctor on my return to the UK in one week. I have been doing some research and have become aware that many people appear to be suffering the same problem yet this is not highlighted as a possible consequence of wearing the Apple Watch.

I am concerned that I have now a problem and is it only a matter of time before I start have problems with my right wrist?

The pain in my left wrist is extremely painful and restricts the function of my left arm severely.

What can be done to help me? Am I now the owner of an expensive iwatch which I can no longer wear? Can I return it to Apple for a refund?