Kind of a personal question about frequent UTIs after having children ..

After I had my son I kept getting frequent UTIs I got a special wash for down there (honey pot) for before and after sex was peeing after sex made sure my partner wasn’t using scented soap down there .. I would get them every other month. I finally got a procedure done to look into my bladder with a camera to see if there was anything going on. My bladder was so small the camera they used to go in there actually helped open it up. They did not see anything abnormal and that was back in October. I thought that fixed the problem until April came around I got another uti and two rounds of antibiotics didn’t fix it. I also wasn’t resistant to those meds so it should’ve worked… I started taking d manose supplements and that made the symptoms go away pretty much all together. I then got my period. After my period I had sex with my husband and after that my vagina opening just started feeling sensitive sometimes sore sometimes tingly sometimes like I had to pee a lot sometimes itchy. I got abdominal pressure on and off. Now it seems like this happens every time I have sex like I can’t have sex two days in a row or I will for sure get a uti. I just have these lingering feelings down there and no infection almost every single day. Has anyone ever been through something like this ?? I’m like afraid to have sex even though I do everything right cleanliness wise I’m just stumped as to what in the actual hell is wrong with my body down there…