Non of my past 2 sex parters have an std. but there are tiny wart-like bumps around my labia. i have very sensitive skin. what could this be?

HPV: Sometimes small bumps on the labia are a sign of exposure to hpv (human papilloma virus). This is sexually transmitted but men aren't tested for this. At 21 years of age, i would get the hpv vaccine, if you haven't already. If you're at all worried, see a physician for an expert opinion as it's difficult to diagnose on the internet. Hope that helps!