Could I possibly be pregnant after having a tubal ligation six months ago?

Patient: After my son was born in Oct. 2009,I had a tubal ligation b/c i’m 22 and have three children. My first cycle was last month b/c i’ve been breastfeeding. Lately i’ve been extremely moody, tired, and suffering from heartburn, which i don’t normally unless i’m pg. I’m also late this month. I have all the symptoms but is it really possible?

Doctor: It is possible to become pregnant after tubal ligation, however the chances are less than 1%. To alleviate your fears yo u could simply take a home pregnancy test.