Mc is 1 week behind, tubal ligation 4 years ago. what are the chances i am pregnant?

Take a test: If you think you might be pregnant check then check a home pregnancy test. They are cheap, reliable and available at any pharmacy. You will have your answer in just a few minutes.

Pregnancy?: A tubal ligation doesn't entirely eliminate the risk of pregnancy. The risk of pregnancy after a tubal is .5-5% depending on how old you are and what type of tubal ligation was done. So do a pregnancy test. If not pregnant, I would worry about an infection or gastroenteritis. Best wishes!