Hi Robin! If you have pain when you urinate, get to your doctor IMMEDIATELY!! Please, it can move up to your kidneys. I have had these sorts of problems and kidney stones most of my life, certainly LONG before Atkins. It is important to take care of yourself now and drink some cranberry and grapefruit juice (not some a LOT). These juices are not on Atkin's but it won't hurt you for a week and you really need to get rid of this. Good luck and hope you feel better soon! Cindi