especially is common after a turbulent weather. Rashes also are not uncommon with viral fever and also may occur as allergic manifestation of some drug you had taken for the same.
If your sex is protected throughout the action then you need not worry. If you have doubt about the condom being torn, then better you go for a HIV
blood check up after 2-3 months of your contact. Otherwise you can go for a DNA HIV PCR which by this time will be sensitive and will tell your status of infection.
Good luck to you.