Pelvic floor therapy?

When I got an IUD my freshman year of college, I began to get extremely painful menstrual cramps, and recurring UTIs. I got the IUD removed, but still struggle with feeling random pain in my pelvic area, sometimes it even feels like my urethra has pressure on it or is burning, but there's no infection. My urologist calls it "overactive bladder" and sent me to a physical therapist, who calls it "pelvic floor dysfunction". The pelvic floor therapy seems to help a bit, but my symptoms definitely flare up after I have intercourse, when I'm extremely anxious, or sometimes when I get my period. Does anyone else experience this? I have no idea what else to do, and just want to live without constant pain/discomfort