Interesting responses, my lady also had an unusual flu-like illness back in mid-Feb. This was soon after we came back to Germany from my Nana's funeral in Hull (she passed from natural causes).
First our boy got a fever (he was playing a lot with his Hull cousin), then I had a 24-hour thing...so far so normal, then her indoors was heavily ill for 8 days, when normally she shakes off seasonal flu within a day or two. What was also unusual was that she would feel better, and we'd think it was done, then she'd crash the next morning feeling even worse than ever.
She didn't have fever or short of breath, just that heavy ill feeling, and sore throat with dry cough which hurt her chest.
As a heavy-duty asthmatic myself this novel coronavirus has put me on red alert, but if we already had it and i somehow got away with it then that would be useful to know. Apparently antibody tests are being developed to check things like that. Some studies suggest the real stats of infected are vastly higher than official, almost one hundred times higher, putting it at seasonal flu levels...and, in a bit of good news if it's true, making its true death rate also more on par with the seasonal flu.