I hope your CT goes well! I'm having pain in that area right now, too, actually. I have a feeling mine is a kidney stone, but it worries me that it's in the appendix area. I'm up in pain right now at 2am, knowing that the morning is going to be hell getting the kids on the bus after no sleep. But I just can't sleep with this pain!! I'm wondering if I should go to the ER or not, but if it's just a stone then I just have to wait for it to pass anyway. And, I know I have 12!! stones right now, so that is the most likely explanation for me.
Let us know what you find out from your CT!