5w6d ultrasound

So yesterday I went to the ER because I had a very small amount of pink discharge while wiping the day after sex. No cramping. My LMP was 3/15/18 which would put me at 5w6d yesterday. (Not sure when I ovulated) they checked my hcg and it was 3,333 which I was told was normal. The pink discharge has went away completely and I’m still not cramping. I never had red blood. I had an early ultrasound to make sure everything was okay and was told they only see my ges sac and yolk sac but no baby. They told me to prepare for a miscarriage. I’m devastated. Anyone have any insight? No signs of a mc. Bellow are my ultrasound results from the doctor