Pelvic Inflammatory Disease (PID) happens when an infection or bacteria spreads from your vagina to your uterus, fallopian tubes, or ovaries. It often occurs when STIs like gonorrhea or chlamydia go untreated, says Minkin. So, seriously, remember to get tested regularly!
PID can come with tons of symptoms or none at all, but some major things to watch out for are severe pelvic pain, pain during sex or with urination, a low-grade fever, vomiting, and heavy discharge. If you have these symptoms, head to your doctor ASAP. It can be treated with antibiotics, but it may unfortunately affect your fertility. "The good thing for young women to remember is that one episode of PID can decrease fertility by about 10%, two episodes can decrease it by about 25%, and three episodes can decrease it by about 50%," says Minkin. "So if you've got PID, it's beneficial to jump on it right away."