Bladder stone home relief?

Okay, so I am gonna give you a little back story. In 2005 they found a kidney stone the size of a golf ball. I was pregnant, so I couldn't have it removed. Due to not having insurance, I wasn't able to have it removed, and I ended up with a calcified stent and bladder stones. Last year they removed the bladder stones and were trying to find a way to get rid of the rest, when I became pregnant, so it had to be postponed. Once the baby was born in Feb, I got into my PCP and was referred to a urologist. After having a few tests and what not done, my surgery to remove the stone (that now takes up 90% of my kidney) along with the stent and the newly developed bladder stones. None of these were bothering me until about 2 weeks ago, when my bladder stones started to act up a bit. Now, it wasn't any worse than a UTI, so I dealt with it. Now, it's gotten so bad that no matter what I do, I feel like someone is stabbing me in my crotch. When I have the urge to pee, it feels like they are twisting the knife, and when I actually pee, it feels like there is a blow torch down there. I called the doctor, who pulled me out of work until after my surgery. I have percocet, which helps a little, but not completely. Dissolving the stones is completely impossible, since the smallest of my stones is 2 inches long. I obviously can't pass them. My surgery is scheduled on Tuesday, so I only have a few days left, but I need some relief until then. I am not allowed to take motrin because of the surgery, but that wasn't helping anyway. The percocets help a little, but not enough. I take baths when I can, but I have 5 kids, so that isn't always possible. I've been sitting down for 3 days now, and hurting so bad I can barely take care of myself, let alone my kids (my mom has been here helping when she can, which is when I get my baths in). My question, basically, is fairly straight forward... is there ANYTHING that I can do to ease the pain for the next few days until my surgery? I'd like to be able to actually play with my kids instead of just sitting and watching them play. My kidney doesn't hurt, only the bladder stones hurt right now.