Hey,,,
Me and my bf had it, I had it for about 2 months!!! I just couldn't get rid of it, I had the EXACT stuff you described. It just finally went away.
And of course with my anxiety.. I thought for sure I was dying!! LOL The muscle fatigue and weakness is what scared me. On top of the dizziness!! (Because mine went to my sinuses and it was horrid!!)
But like everyone is saying just get lots of rest, and try and take care of yourself! Best wishes
HOPE YOU FEEL BETTER SOON