4 month vaccinations

Okay so I got my 4 month vaccinated on a Monday, then then had fever that night (which I know is normal after vaccinations) well the next night she broke out in a rash which just started on the belly then spread everywhere. (Bottom of her feet clear to her head. It was heartbreaking seeing this. Now it's been almost a week since her shots and she still has the rash.. Not as bad as before but still has it. Pediatrician said it was a viral rash (roseola) but I know that is more common in 6 month olds to a certain age. The Pedi also claims this wasn't from vaccinations.. Has anyone else had their LO go through this??