12 weeks,13 weeks, or 14 weeks?

jeremiahz_momma03

So when I get on TB it says "your are 13 weeks pregnant" and right under it says my pregnancy calendar so when I click it it says 14 weeks. Which confused me because I'm thinking I'm 12 weeks and some days. So I go make a ticker to see what that says and it says I'm 12 weeks and 3 days. lol So which is it? Im due May 19th, 2013. The bump has that due date in my account and that's the same date I put when I made the ticker. Is your TB going crazy too or is it just mine?