Welcome to NeuroTalk. You have found a good place. Lots of nice people.
There is no way to tell if you head ache is due to jostling your brain or the pressure a sneeze causes on the various tissues in your head or even if your neck has been traumatized again. Any pain that radiates or is sensitive to touch behind your ears is often a manifestation of an upper neck trauma.
You are still very early in your recovery. Just because you had 2 good days does not mean you were recovered. You may roller coaster for some time as you add stress factors such as illness, emotional stress, physical stress, and nutritional stress.
Take care of yourself and you will have less of the roller coaster.
My best to you.
Mark in Idaho
58 years old, retired due to disability, married 33 years, father of three, grandfather of four, Suffered a serious concussion at 10 years old (1965) stopped most driving after last concussion at 46 years old (2001), Post Concussion Syndrome/Multiple Concussion/Impact Syndrome with PTSD, immediate and short term visual and auditory memory problems, slowed processing speed, visual and auditory processing difficulties, insomnia, absence seizures, OCD, 14 concussions since first concussion at 8 years old, Taking paroxetine and gabapentin for 12 years. Added L-Tryptophan and reduced paroxetine by half 3/2013
"Be Still and Know That I am God" Psalm 46:10