Pregnant but showing I'm on my period?

Mattie • Elsa Jacqueline born Dec 21/14
I am currently 13 weeks pregnant and I have out in that I'm pregnant but I did the update today and now it says that I am on my period? It's nice to have my old info back but shouldn't it stop predicting my period  and I did check the info page and it's still selected as I'm pregnant.