Hi There,
I've suffered from PCS for 9months and can relate to some of the symptoms you are talking about. I do also get pain in my jaw and teeth, also in the first couple of months I also had this weird pain on the top of my head. Although I still get headaches daily, this strange pain on my head has gone. PCS can also cause anxiety which I also suffer from, so try not to panic too quickly, it might be anxiety. Hope it helps. Good luck