You can search for "surgery" "resection" here in our TOS forum to find past posts..
If I recall many had various symptoms for quite a few months after surgery.
A few even longer, but the main nerve pain was resolved..

Some also had pec minor release or scalene release work done.

The nerves stay angry longer and if damaged takes time to recover..
After more recovery time will you be getting some expert PT?
Just in case there are trigger points or any other factors causing added symptoms..

Explore the sticky threads up above the main TOS page..