Thinking of using tampons..

So of late after my periods i develop so many rashes. The latest one has been worse. After my period ended i have had so many rashes and a swell which i popped and blead a little bit more than i expected and that made me worried. Can using tampons change the situation of rashes.

EDIT

I really dont know why i have the rashes but i have been suspecting the pads. After like 3 hours i feel discomfort( itching to be specific)