Welcome @linde123, I have carpal tunnel but haven't had any surgery yet but may have to in the future. Here's some information that may explain what is happening:
- Mayo Clinic Q and A: Recovery after surgery for carpal tunnel syndrome — what’s normal and what’s not -- https://newsnetwork.mayoclinic.org/discussion/mayo-clinic-q-and-a-recovery-after-surgery-for-carpal-tunnel-syndrome-whats-normal-and-whats-not/