[diego]

Ok, so I'm a gigging guitarist and I do a lot of gigs during the week, sometimes even 4 gigs of 3+ hours weekly. So far I played Yamaha western guitar with a slim neck that is really easy to play, and I haven't experienced pain even after a full schedule in a week, but lately I switched to Ovation classical guitar with a much wider neck, but it's mainly the "bulge" build of the neck that is causing discomfort to my thumb on the fretting hand, and I feel it somewhere in the middle of the thumb. It's not a major pain that would cause me to stop the gig, but I'm beginning to wonder if I should change something or do some exercises before it becomes worse. If I change a technique with a thumb, like not going a full thumb-over but grip the neck with a thumb tip in the middle of the neck instead, it's much easier on the thumb.

Is it something that I need to go through because I seldom played classical guitar, or should I stop and do some rehabilitation first?