hi there is a problem with them coming untied if you now thinking you may be pregnant then go get a test done if your not after the test then would be the time to ask why your periods are getting shoter. ok quick research shows that periods do get shorter with tied tubes. hope this helps. good luck
my period used to be 6 days of bleeding. starting heavy and ending light. now it's only 3 to 4 days. . i had my tubes tied after my last pregnancy and i am 29 years old.