I started with nausea 3 week ago n began to feel very heavy headed this disappeared for 1 week. Then again i started to feel nauseas never been sick , i got a heavy head that is fuzzy like all the time n i was left exhausted. Sum days id go to bed just so it was quiet tge slightest noise like a kettle boiling was awful. Ive cried all week cause of my head n lack of energy. Had bloods taken fr inflammation all was clear. Gp states its viral cud take up to 5-6 weeks. Ive been signed off work fr 2 weeks as i struggle to focus drivibg and im a community nurse!! Just want answers not sure virus is always the answer...