Hang in there and rest and sleep a lot. I had it early on, 1 week of serious flu symptoms, went to doc, said “mystery virus.” Took an antibiotic. Started feeling better after about 8 days, had never had the flu for that long, but truly, I’m not the healthiest person and my system finally handled it. Another two weeks of fatigue, and fine ever since. You will get through it, maybe quicker than you think, but make sure you sleep as much as your body wants, chicken soup, fluids, etc.