I have an embedded bio-film chronic UTI. Which you will have simply by the amount of UTIs you have had that keep coming back.
I also can't take the antibiotics. Yes systemic HRT and vagifem and ovestin without a doubt helps.
I am also seeing a nutritionist, you need to really sort your diet out also if it is not great.
No sugar, processed foods , gluten ....back to good basic fresh home cooked foods , I will also be taking probiotics amongst other things as our guts are very often linked to this also , as you have had so many short term antibiotics your guts will without a doubt be not working in harmony regards the good and bad bacteria , a poo sampleni have recently had done confirms all of the above.
There is so much to all of this , we are why we eat and this time of our lives more than ever.