Could I be allergic to pads?

So on the third or fourth (last day of period) I always get a rash. It’s red, bumpy, and sore to touch and even washing myself can be a little painful. It’s like that for about a day or two. But I also experience slight itching after every period. Nothing bad and no weird discharge or any smells, and it always goes away within 1 to 3 days, but this has me wondering if I’m allergic to pads? I’ve noticed it’s worse with certain pads and changing it more frequently doesn’t always help.

I also don’t know what to use instead since I don’t feel comfortable using a diva cup since I can’t even fit two fingers inside myself (virgin) without any pain, and I hate tampons.