6 weeks 6 days no baby?

I went to my first appointment and got an ultrasound sound (not a transvaginal) and my doctor said they couldn’t see the baby but it might be because it’s too early. He said the gestational sac is fine but I’m just a little nervous that not seeing the baby may be bad. They have me coming back next week again but has this happened to anyone at 6weeks 6 days and everything turn out fine?

Edit: this post was from 09/2019 for those who are reading this, is was a successful pregnancy and my son is now 2!