The left side of my bellybutton and lower back is aching. I've noticed my urine is kinda yellowish and my skin is dry. Last month, I had UTI which I've taken antibiotics. To help fight UTI, I'm drinking cranberry juice and$ increased my water intake. But if I have not taken water before going to bed, in morning my urine turned to yellowish again and sometimes dark yellowish. My period is delayed for 6 days now and thought that maybe it got affected by the high dosage of antibiotics I've taken or maybe I am anemic because my fingernails are pale. I am so worried because I've heard that UTI can lead to kidney disease if not treated well. What could be the possible problem I have? Can this be cured by self medication? Please advice. Thank you very much.