Who had problems with cystitis and kidneys even before pregnancy, and …

Who had problems with cystitis and kidneys even before pregnancy, and it was an exacerbation during the first trimester, what were they saved by? In the first pregnancy helped Kanefron, and now for a week only for a while passes, and then again. Saved only by cranberry and lingonberry, stewing in a thermos. Ultrasound of the kidneys showed salt, the doctor says I can prescribe azithromycin maximum.