Been with one guy for the past year, both have been tested clean, and haven't been with anyone since. This has happened to me twice now, both when I'm sick. First time I had a fever, this time I have bronchitis and a sinus infection. In the area between my anus and vagina and one closer to my vagina, I have open sores that hurt to touch, hurt to urinate and are painful all around. They have no pus in them. Not a blister. They aren't grouped together. Only two of them. And it's the second time it's happened- is it because of my sickness or just coincidence? What could they possibly be?

We can't diagnose here. See a doctor for an exam and a proper diagnosis.

You tested clean, but some STD's take months, sometimes years, before there's an outbreak, or before they're able to be detected.

I wouldn't leave this, I'd see a doctor. As TJ said, we can't diagnose online. This is your health, you have to be the one to take care of it.