I actually have a staph infection in my kidneys right now, I got it when my stent was taken out. Staff (at least for me) can be really hard to get rid of. However, I used to be like you, maybe not quite as extreme but I would go to the ER a few times a month when I was having kidney problems ( I had a nophrostomy tube that caused major infections and stones) and I also had half my kidney taken out. At the time it seemed emergent to me because my health was failing quickly, I went into kindey failure and was super sick. But then I reached my breaking point when I went to the hospital twice in one weekend after a car accident (I was having horrible pain plus found out I had several cysts in my abdomen one that had ruptured) and the doctor gave me a pysch evaluation for going twice in one weekend. Telling me that these things are not emergencies, I guess it clicked then that pretty much 85% of the stuff I've ever gone to the hospital for was not emergent. Now the times when they were (one was life threatening I actually legally died) I was stuck waiting in the ER waiting room until I passed out and stopped breathing because it was so backed up with minor injuries. I guess, to answer your question yes that is overkill. But I also know how it is to think what you're going through is "life threatening" especially if major pain in involved. I actually have better successes and have gotten a diagnosis when I wait it out and make an appointment with my GP. ER and urgent care places only look for things that will kill you, once you're stabilized they will not dig too deep. If you're concerned go to your doctor, I'm sure you will get better results and he will be more active.