Hi Mouse
It's great you are making such good progress, but I understand about the symptoms returning after a few weeks.
This happens to me , you think it's all over then suddenly you get a return of head ache or twinge.
I think you need to be aware of anything you might have done to bring on the symptoms, maybe you over did it the day before .
I read somewhere that our symptoms are our friend as they are telling us to take it easy.
So listen to your body and go with it not against it.

I know it's frustrating but you have come such a long way so focus on that positive note.
Our brain is like a computer it's gets the occasion glitch .

Good luck and keep healing
Nine lives x