Normally I am very healthy physically and barely get a cold, however

I've noticed over the last few weeks I've been experiencing cold/flu-like symptoms and fatigue - these seem much worse after exercise. I've also noticed waking up and feeling these symptoms around 2-3am in the morning, sometimes with night sweats, but when waking on normal time, they are much less severe.

I've had pretty much every blood test under the sun recently to rule out the most common and 'scariest' suspects.

I'm currently taking Echinacea, Ferroglobin and Vit C to combat symptoms but its very slow progress compared to my normal immune function.


While I'm totally open to the fact that this may some persistent Autumnal lurgy.... Has anyone else experienced similar or problems with their immune system after head injury/during PCS??