Yes, but it's unlikely. It is a very effective form of birth control, but like anything but abstinence there is a failure rate. If anyone suspects pregnancy after a tubal ligation, it's really important to check for ectopic pregnancy right away. Sometimes the tube is open enough to let sperm pass through, but is too scarred to let the fertilized egg pass through, leading to an ectopic pregnancy. This happened to my aunt after her tubal ligation and she almost died after her tube rupture and she had massive internal bleeding. At first they didn't check for pregnancy because she said it was impossible for her to be pregnant when she went to the ER for abdominal pain.
at 12:27 PM on Jan. 5, 2010