Started with a head ache for 5 days then started with a dry throat, slight temp and now a cough, but no runny or bunged up nose so not your average cold. I don’t feel really unwell but the dry cough is horrible and almost makes me sick at times. I’ve tested twice for covid as I had a couple tests at home but both were negative so guessing some other kind of virus. Anyone else had/have similar? How long does it last? Did anything help with the dry tickly throat?