Ultrasound report showed Ureterocele.

Hello! About 2 years ago my gynecologist suggested ultrasound as I'm trying to conceive baby but US report showed Ureterocele but when they examined the kidneys they were fine. But Lately I'm feeling back pain just below the breasts area and a little trickling at urine area. I had visited my gynecologist again about a month ago when I suddenly experienced extreme pain just below my left ovary and rectum area (butt hole?),gynea said it's UTI so suggested 7 days medicine but the trickling remains. NOTE: I have IBS too which causes constipation sometimes and had some bleeding while pooping about 2 months ago haven't visited a dr. for it just taking lexatives. My question: who should I consult? A urologist??