Wrong period dates

Morgan • Married 4•20•2015 ☆ TTC #1 ☆ Currently on Cycle #30 ☆ Mommy to 4 wonderful fur babies
So for some reason my period estimated dates are completely off on glow. My cycles are 32 days long. My period stopped yesterday. Soy next one should be around the 12th of February. But glow says my next one won't be until March 15th. What's going on?