Vulva itching and burning??

This is embarrassing to post, hence the anonymity. But for the past three days, the area around my vagina has been itching. Last night it felt worse so I looked at it and the area is flaking. It resembles the cracked and flaky skin some people get during the winter. Today, when I went to look at it again, I noticed a small tear, with blood. The area is dry and still flaking. It’s also painful (feels stinging).

As far as I’m concerned, it shouldn’t be an STD, as I got tested a couple weeks before my IUD insertion and have only had sex once since, with someone I was already active with before.

I don’t know if this is normal, but it’s never happened to me. Could it have been caused by my excessive use of liners in the past week?? Is it something to worry about? I’m legitimately freaking out :(