Hello, my name is Dr.Dorina Gurabardhi. I understand your concern. Treatment of cystitis include: -antibiotics so you should continue levofloxacine for 3 days per os. Some advices that I can give to you are : eat helthy,diet plays an important role in curing cystitis. Bladder infections are often caused by E.coli bacteria. Drinking plenty of fluids throughout the day helps your body flush out bacteria and fight the infection.Drink 2-3 litres of fluids (water will do just fine) each day -Go to the bathroom as often as you need to – don t hold it in -Avoid drinking alcohol, coffee or citrus juices (orange, lemon, lime, grapefruit), as they can irritate the bladder -Avoid drinking sugary drinks -Drink cranberry juice to prevent future infections -Get more Vitamin C -Good hygiene is necessary Hope my answer was helpful, if you have any other questions I ll be glad to help, thanks!