I was a victim of an assault; going back to work was an absolute disaster for me if you feel you can thats fine , but if things do not improve, what then ? pcs is a mis noma in my opinion . but 3 months is not long with a head injury, I had a couple of concussions when I was younger, and I got over them in a couple of days, but longer residue effects suggests more trauma than the doctors can treat or see on scans

all I can say is rest rest and more rest until you feel up to returning to work . or you may find your self dismissed for not coping, and your injury will not be blamed I speak from experience

so welcome you will find you are not alone with this and NT is a helpful site