A temperature and feeling achey are also symptoms of a COMMON COLD, Dr Eyes.
This article should explain more. i.e:

"Sometimes confused with the common cold, influenza is a much more severe disease and is caused by a different type of virus."
( Johnny Catfish - Yowsa!, Mon 30 Jul 2007, 15:04, archived)

I see Dr Catfish
In that case, I recommend a cuppa tea.
(Psycho Eyes, Mon 30 Jul 2007, 15:07, archived)