5 weeks 6 days ultrasound

Allison
So like the title says today I am 5weeks and 6 days according to my ob. Which is perfect because I was thinking 6 weeks 2 days. I did have my first ultrasound and the doctor saw the pregnancy sac but no baby yet. I have had zero bleeding so not a miscarriage. My doctor said not to worry everything is fine and healthy and I go back in a week and a half for another u/s. I wasn't worried at all leaving the doctors office but reading online about women's stories of finding a sac but no baby and something went wrong and the baby never developed is definitely making me nervous. Has anyone gone through something similar?