Hello, I have a history of kidney stones and hydronephrosis and for the past 5 days I ve had horrible flank pain, urinary frequency and feel like there s a blockage. I went to the ER today and my ultrasound showed mild caliectasis and Mild hydronephrosis but the dr said it was ok and follow up with my urologist. I m still in tremendous pain, any suggestions? FYI, when I had hydro the last time, I ended up needing a nephrostomy tube and had a pee bag for 2 months :(