had the wrong due date this whole time?!?!

Amy • ❤️
Ladies what do you think??? 
I've been told this whole time my due date is the 27th march which would make me currently 27 weeks + 4 days. 
I've had a think about it today and according to my LMP and conception dates I'm actually due the 22nd march. 
According to the picture do you agree? 
Is this possible to actually happen!?