U/S differ from estimated weeks/days🙁

Chenedra
Hey ladies anyone had their first U/S and found out that their not as far along as they were first told ?? I was and I'm a little disappointed cause I couldn't hear a heartbeat because from the US I'm 5w6d when from what I was told from my LMP! 
#Bummed but on a brighter note I did see the sac and fetal pole😊