8 weeks measuring 5

Leslie • Mommy to 4 beautiful daughters and an angel baby 10/23/18 rainbow 🌈 baby boy due November 13th

I went in for my 1st ultrasound today. Based on lmp I should be 8 w 2 days but at ultrasound Doc found a gestational sac and fetal pole measuring 5 weeks 2 days . Edd of May 19 . Doc said not to worry and we will do another us in 10 days but I can’t help but stress anyone had anything similar happen with a good outcome ?