Apple Watch causing wrist pain

Hi, I've seen some people complaing about wrist pain potentially caused by the Apple Watch. Bought mine about six weeks ago and started to feel a pain in my wrist- and hand joints on my left arm (NOT a rash or skin irritation). What are the possible causes/solutions? From a health perspective, this can't be good? If the Watch is causing the pain, Apple must have some solution even if it entails that I get a refund for the product? Again, if it is caused by the Watch, it is affecting my exercise program and it will be sad if I can't use the Watch for what I bought it for. Apple, any ideas / response? Please.