Worried about revealing gender

I'm 16w3d and had ultrasound yesterday. Doctor was convinced our little baby is a girl. He showed up the 3 lines. I'm beyond excited always waiting out first baby to be a girl. We go back in 20 weeks for anatomy scan. My DH wants to do a gender reveal for Easter next week. Me im svared because of all the stores I read about having a girl then going into the ultrasound the next time and it's a boy! Am I being overalls crazy and should just relax and enjoy to reveal our baby girl?