This is Dr. David
your friend may have called it carpel tunnel syndrome.
but it doesn't sound like carpel tunnel syndrome.
it sounds more like a tendonitis in your wrist
or inflammation of the tendons which run through your wrist.
I am glad you have tried resting and stretching the tendons in your wrist.
you should also try to ice your wrist with a bag of ice wrapped in a towel for 3-5 times a day.
and also used advil or aleve anti-inflammatories to see if these help.
if these don't work, you should see a doctor about it and get an ultrasound or MRI scan of your wrist to check the tendons and bonds in your wrist to see if something is inflamed.