Posterior neck discomfort with shoulder exercises

Anybody dealt with this? Not necessarily pain, moreso discomfort which can pretty become bad if I push it.
Get it with moderate weight on shoulder press, lat raises, shrugs primarily. I do not do any presses or pulls behind my head. I even get it sometimes if I have to sit for long periods without any type of back rest, like if sitting on bleachers for a few hours.

Pain/discomfort doesn't really go anywhere, just kind of sticks to that prominent vertebrate at bottom of neck/top of back. C7?