...although you probably will, fairly soon.
I think most of us are being driven a little bit hypochondriac just now, questioning every ache or cough. And we're at the tail end of the season when most of us catch a bug or two - lost of us will have had influenza or another seasonal infection during the winter.
Quite a few people seem to think they've maybe had covid-19 already, and a lot of people who are feeling under the weather just now suspect they have it.
Most of us haven't, and don't.
Despite popular theories, it probably hasn't been in circulation much longer than official records show - it looks as if it's passed on easily and we've seen in Italy and Spain what happens when lots of people have it; there haven't been any such disasters across Europe earlier in the year so there probably haven't been many people with it. That weird bug you had early this winter wasn't it.
There have been a bit over 5,000 confirmed cases in the UK just now. (Yeah, that figure's going out of date fast.)
If true cases are 10 times that, that's 50,000 infected or having already had it.
There are 66,000,000 people in the UK, so fewer than about one in a thousand of us have it or have had it, at present.
Even if there were a hundred times as many cases as the official ones (which seems unlikely), that's still under one percent of us.
So that bug you have just now probably isn't it either. Unless you've been in close contact with someone you know had it, or you've actually tested positive.
This is all going to change very quickly over the next fortnight or so, though - the measures put in place won't show their effects for about a week and a half (due to the asymptomatic period at the start of an infection) - and things such as the supermarket frenzy or the last night out in the pub have probably boosted the spread further.
As it doubles every two to three days just now, that's about a sevenfold multiplicaton per week - there will probably be about 50 times as many cases in a fortnight. (There are big error bars on that, as with any exponential growth, but it's about the middle of the likely numbers).
That's about two and a half million cases in the UK in a fortnight, given those assumptions and the assumption that there are about 10 times as many cases as reported, so that'd be 3-4% of the population infected in a fortnight.
Add a week to that and we're possibly looking at about a quarter of the population infected if nothing is slowing it down; it'll have to slow a bit from there as it will be encountering 'fresh' people less often.
So a large fraction of us are about to get it, and it's probably going to massively explode in numbers over the next two weeks ALREADY, no matter what we've done so far - things we do now can help what happens in about ten days time, but not really with what happens up to then.
This is probably the last fairly normal weekend for a while - the next week is likely to be quite shocking, and after that it's going to be unrecognisable.
But yeah, still, most of us haven't had it yet. Don't assume you're already immune!