I had this problem around October 2024, but was told after numerous tests and standing up for myself on how I was feeling, that I had PID (Pelvic Inflammatory Disease) and that although the tests were coming back negative for STD’s, there was still damage further beyond what they knew originally. I ended up completing a total of two antibiotic courses and then they administered a IM injection as well. If you have not mentioned or discussed the possibility of PID caused by your diagnosis of a STD, at least consider doing so would be my advice.