Both my wife and I had the Swine Flu. We flew back from the UK a few months ago and I contracted it and a week later my wife got it. We are both generally healthy, (some minor medical problems). In both our cases it followed the exact same pattern. Sick about 5-6 days, temps about 1 1/2 days at 101-102,VERY SORE THROATS, weak with little muscle aches. Took strong antibiotic for the throat and had a general weakness afterwards for about 4 weeks. Had Thermaflu available but did not take it since we felt the antibiotic would take care of the throat and we should just grin and bear it.
It may be different for those that have serious medical problems but in our case it was like a weak general flu.
Just thought I would pass this on as it maps pretty closely to JohnZ's points.