Is there anyway that I can be pregnant? I had my tubes cauterized in 1993, that is when my youngest child was born. My last period was May 19, 2009. If not what else can be wrong?

The only way to know if you are pregnant will be for you to take a pregnancy test.
There's other things that can cause you to miss a period. Changes in diet and/or exercise. Stress. Are you old enough for it to possibly be menopause?

Tubal ligation | BabyCenter (http://www.babycenter.com/0_tubal-ligation_1282183.bc?page=2) it sounds highly unlikely that you could be pregnant. But again, you have to take a test to know for sure. You may want to call your dr if you have any concerns