hi there, first of all you should never take an incomplete dose of antibiotics as it makes the organism resistant to that drug in future. That is the reason your symptoms have reappeared as the infective bacteria was not eleminated totally. You may continue syp citralka but you need to get your urine culture and sentivity done again to see which antibiotic will be effective and please do complete this course of antibiotic. Self medication
is not only harmful but might not be effective. Take care.