Hcg levels high but only gestational sac

Judy

I went to the ER today as I was having cramping, and hot flashes like crazy

I don’t have last menstrual cycle to go by as I gave birth in December

My hcg level today was 11,632

Ultrasound showed only gestational sac measuring 5wk1day

ER doctor said we should have seen at least yolk sac or even heartbeat with my hcg levels

Has anyone has high hcg level and then later yolk sac and baby appear?

I am feeling this is going to be another miscarriage