5 weeks 4 days ultrasound

Hi ladies, so I had my dating ultrasound at 5 weeks 4 days and there was no fetal pole, just the gestational sac. My hcg levels are great and I have absolutely no signs of a miscarriage. They are bringing me in for another one next week so I'll be almost 9 weeks then.... should I be concerned or was it just to early to see the baby? The ultrasound tech said it was to early but that doesn't help my brain from spinning :(