There is no research that supports the theory that C-section tubal ligation poses a higher risk of pregnancy. According to Dr. Judith Reichman, studies show that there is a two percent chance that a woman will get pregnant after having tubal ligation after a C-section, laparoscopic surgery or vaginal delivery. A pregnancy may occur within ten years of the procedure.
Tubal ligation is considered to be a highly effective way to avoid pregnancy. Reichman states that when the procedure does fail, it is likely due to the tube not being entirely closed, which is rare. However, if a woman misses a period after having this procedure, she should immediately contact her doctor. A pregnancy test and ultrasound will be completed to find out if she is pregnant. If so, the doctor will check to see if it is an ectopic pregnancy, which is when the fertilized egg becomes implanted in the fallopian tube.
According to the Mayo Clinic, age also is a determining factor for those that do become pregnant. Younger women have a higher chance of getting pregnant unexpectedly after tubal ligation while older women have much less of a chance of getting pregnant after the procedure. For the most part, a woman who decides to get this procedure accepts that it usually results in permanent sterilization.