I have had my tubes tied for almost 12 years, and my current boyfriend had a vasectomy over 20 years ago is it?

is it possible to get pregnant? I am late on my period which has normally been running every 24 days probably due to the fact that I have four girls who have their periods throughout the month and I am now on day 28 - What are the chances? I know god works in mysterious ways, and I know my friends mom got pregnant when my friend was 18 and her husband had a vasectomy.