My wife had something similar to this for years. She eventually got referred to a urologist, where they found blood in her bladder. She was always getting cystitis, but more often than not, no infection ever showed up.

Weirdly, after having her bladder expanded during the investigative urology app, her symptoms disappeared for well over a year. Supposedly this is quite common for some reason. you'd think an invasive procedure would make things worse, but it tends to settle the issue.

Yeah, to my point, nothing serious was found and she needed to go on a low dose, long-term course of antibiotics. It still comes back periodically, but since she's went through treatment for a totally unrelated cancer, it has all ceased again.

Thank you for your response, it has set my mind at ease.