Sad day

I went for my first ultrasound today and all we saw was an empty gestational sac. The dr tried to reassure me that I could be less than 6 weeks but I track my cycles religiously and should be 10 weeks. I got my first positive test 6 weeks ago. I have to wait at least 14 days to go back for another ultrasound. I had 2 miscarriages before having my son, whom is now 1. This is feeling a lot worse. I’m so anxiety ridden and just want to know what’s going on. I feel as though my sweet baby is gone but I don’t know for sure and it’s killing me. Just needed to vent a little. I can’t sleep. 🥺