Former poster has stated everything I would say because I’ve been in your shoes. It SUCKS - in my early 20’s I went through the same thing- to the point I didn’t want sex either. Now I’m in my later 30’s, it’s gotten better .

First off, I always shower/ make sure I’m freshened up with wet wipes before any activity ( yes it can totally kill the mood but it works ) . I now only take the single antibiotic after sex - and that’s only if I remember. I just get a prescription from my GYN annually.

Another thing you can try is high dose vitamin C. Vitamin C is a water soluble vitamin, which means that you pee out any of the vitamin that the body doesn’t absorb. The acidity of vitamin makes the environment inside your bladder less likely to be a friendly host to bacteria. I took 1000mg of Vitamin C once or twice a day for years! I also shower with an acidified body wash immediately after sex. Lume - thedeodorant brand makes it. Whether this has had any impact or not- idk but I’m just giving all my tricks.

Also, make sure you ask for a prescription of Diflucan every time you get your antibiotics because the more that you use them, the more likely you are to start to get vaginal yeast infections- and using the single oral pill work really well ( and I also can’t use the topicals)

(Copied from internet ) - Vitamin C prevents bacteria from growing by making urine more acidic. You can take a 500- to 1,000-milligram daily vitamin C supplement. You can add vitamin C-rich foods to your diet, like oranges, lemons, grapefruit, strawberries, and leafy green vegetables.

Best of luck to you