Kidney stones?

Well, it's 3:00 in the morning and I woke up with a searing pain in the right side of my lower back. Please, please, please don't let it be kidney stones again. I'm tolerating the pain right now and trying to see where this is going to go. Brian's out of town so he won't be able to drive me anywhere if I need it so I don't want to take any pain medication. I REALLY don't want to go to the emergency room, but I'm afraid of infection- can cause preterm labor. Sorry doc, I think you're going to get an early morning phone call...