How common is yeast infection in pregnancy?

I had UTI during my first pregnancy. My gynae prescribed antibiotics for me to clear the infection. During the UTI, I took unsweetend cranberry juice (very sour though) and also drink plenty of water. You can get unsweetend cranberry juice from GNC or major cold storage/fairprice. To prevent recurring UTI, it is also encouraged that you drink cranberry juice occasionally http://www.m.webmd.com/women/news/20100823/cranberry-juice-fights-urinary-tract-infection-quickly Apparently quite a number of my friends also had UTI during pregnancy, so it is quite common.