Be careful, try to clarify that it's overuse and not the beginnings of carpal tunnel syndrome. Yes, repetitive stress causes injuries!
I have had bouts of CTS on/off for 10 years. If it starts I have to back off of whatever has aggravated it; lots of computer work is one cause, and long rides on my motorcycle (clutch and throttle work aggravate it, my hand can go numb in the fingers on the throttle side, I need to get a short pull race throttle) make it bad sometimes. My chiropractors over the years have helped clear it up if it gets chronic, the one I have now uses the newest deep heat laser and it's fabulous.
If you play gently for awhile and let your wrist heal up if it is a strain that would be smart and it should go away. Also, ice it after playing, maybe 10 minutes, if you have any discomfort, see if it makes a difference.
Starting out easy to warm up seems like a good idea. I always try to stretch the left hand, hadn't thought much about the right, it's my left that the joints get aggravated and then can hurt. But there is arthritis in some of the knuckles. I have better flexibility now than I did.
I'm getting old so too much of anything hurts.