I had 48 hrs of feeling really low, weepy, head coldish with sinus pain, and I obviously had a fever (I felt as if I was having an out-of-body experience) but that passed and from then on in it was like having a low-level head cold that I couldn't quite shake off. I also had a catch at the back of my throat giving me an intermittent dry cough, like my throat was irritated. I worked throughout.
Mr D felt rubbish for 24 hrs but no real temp, he's found that he's exhausted waking up every morning and it's taking about an hr to properly shift.
I was worried about lung issues but we've had nothing like that. I had the flu a few years back and I was breathless for months after.