I had great teeth all during my youth and teenage years. I have always taken very good care of my teeth. When I had my daughter 14 years ago my gums started to bleed and I did have a tooth get a cavity and break off. I didn't even know the cavity was there or would have had it taken care of before it got so weak. I had my son 11 months ago and I can tell you being pregnant with him has done some major damage to my teeth. For some women pregnancy can really affect your teeth. I have had outstanding union dental benefits for the last ten years so it was a surprise to go in while I was pregnant and have nothing wrong and go back six months later (after I had him) to find that even though my teeth still look good, I had many cavities developing along the gum line. For your own piece of mind get the second opinion, however, it is entirely possible in two years to get 13 cavities, especially if you have had children in that time frame.