Come here for a hug love @AySugar, could it be there is another factor ur gynae is not looking at or considering. Two times is enough to treat it nah. Another thing ,could it be that you both need to be careful of the toilets you are using and maybe seek a 2nd opinion. Bcos it’s becoming too consistent every month. For the fallopian tubes, one of my sisters had ectopic pregnancy and she lost one but guess what, she gave birth to 3 kids after with the one tube. Some UI takes a long time of taking antibiotics treatment b4 it eventually cures.
Another home remedies are: taking plenty water , food rich in Vit C, reduce caffeine, alcohol, spicy food, nicotine, carbonated drinks, and artificial sweeteners. Pele dear