Calcium oxalate is by far the most common type of kidney stone. Less frequently, uric acid can cause stones. (This is the same chemical compound that is the cause of gout.) Struvite, xanthine, and other types of stones are rare. Some stones are combinations of these minerals and chemicals.
Your doctor will give you a schedule of all the doctor's visits you should have while pregnant. As your pregnancy progresses, you'll see your doctor more often. Most experts suggest you see your doctor: about once each month for the first six months of pregnancy. every two weeks for the seventh and eight month of pregnancy.
In your third trimester, you will have a prenatal visit every 2 weeks until week 36. After that, you will see your doctor or midwife every week. The visits may be quick, but they are still important. It is OK to bring your partner or labor coach with you.