Well, I had to book up and undertake one today, not entirely sure I did it right I was so nervous and gagged a few times on the swab stick.
I started getting cold symptoms yesterday and was feeling really hot this morning when waking up, nights sleep was rubbish.
Asthma is okay at the moment though, I'm breathing normally, which I'm taking as a good sign, but will await the result and hope for the better outcome unless I need to go back for another swab gag session