I could have written this post a year ago. I've had multiple kidney stone with both of my pregnancies. They are a pain to deal with when your not pregnant and even worse when you are. Start by drink a ton of water. Also try not to drink ANY carbonated beverages. The next time you see your doctor tell them you are really concerned. I will warn you about the first test they use to figure out whats going on is a 24 hour urine. Basically you keep all your urine in a plastic jar for 24 hrs. It a mess to deal with. I also agree with another poster about that there is a hormonal component to your kidney stones (yea, pregnancy).
I also dealt with a large ovarian cyst this last pregnancy. Have they done a recent sonogram? Mine finally started going down at about 12 weeks and ws much better by 18 weeks. They can be a real pain, but there is not much they can do about those.
I sorry your having a miserable pregnancy.For some of us women its just not a very comfortable time in our lives. Message me if you have more questions.