I'm still experiencing symptoms three weeks after first testing positive, so will tomorrow be starting my fourth week off work. I'm mostly just achy and lethargic now, but am a bit concerned that I don't seem to be getting better.
Spoke to a doctor last weekend who said it wasn't unusual for it to take three or four weeks to feel better, and that as long as I didn't have problems breathing or a significant high temperature (which I haven't had, thankfully), I shouldn't worry.
I think I was probably a bit under the weather - tired and stressed - before getting infected, so maybe I'm taking longer to fight it off than I would have otherwise.