I agree with lemongrove, I’m sure he’s had it, but we have to remember that some people, in fact the vast majority, get Coronavirus quite mildly. If this is the case with Trump, it’s not surprising that he’s recovering quickly. Plus remember that he’s been pumped full of a cocktail of drugs normally used in the most serious cases.
I think the medics have more integrity than to claim he’s had the virus when he actually hasn’t had it.
He’s just been lucky, but not able to recognise that at his age, he’s actually been very lucky.
A number of well known people have had the virus and not had it too seriously. Prince Charles comes to mind, Barnier, and a few members of our Parliament.