I have a throbbing pain that tonight is on my right side but moves around... could be in my side, then in the sides of my lower back (like over my kidneys?) or in my stomach. Sometimes are much worse than others, and the painkillers I have tried a couple times won't touch it, but heat takes it right away, and it may stay away for a couple hours, or even nearly a full day. This has been going on for 5 or 6 days. When it first started, I also had a couple episodes where I would continuously feel like I had to urinate, even if I just had seconds before. Also for 2 days, I would experience a very strong sensation (not a burning, more like a extreme sensitivty) as I was urinating. All that seems to have passed, but the pain is still there.