About two weeks following my injury, I started having chronic tension type headache, along with some nausea.
(First 2 weeks I had more migraine like headache) Feeling a dull pressing pain around my forehead. No vomiting.

Past 3 month I'm having this about 4 days a week, even though it has recently subsided.

I did cat scan and everything was fine, and I dont really know whether this is common symptom or not, I need to know
So I can focus on recovery.
This headache aggravated by cognitive tasks.

Is the nausea headache a PCS symptom?