I have cystitis. I have had it many times before, but have not had it for at least a year now. It happens if I do not urinate after intercourse. Might I have some kind of kidney issue seeing that I have had this infection so many times? Also is a course of oxytetracycline a suitable antibiotic treatment?
Good Day, and thank you for being with Chat Doctor ! Cystitis could be a local problem in the bladder or could be coming from the kidney. I would recommend getting a kidney and urinary bladder ultrasound to check for any anatomical abnormalities that may be corrected. Cystitis can be caused by abnormality in the defense mechanisms of the body. I suggest Chat Doctor.  Tetracycline is not a good antibiotic and I usually prescribe ciprofloxacin, but you may need a prescription to purchase it. I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications at