wedding dresses for pregnant women

*Sensitive post*
I'm currently about 7 weeks pregnant and had my first ultrasound yesterday, however during the ultrasound the doctor couldn't see the baby, they said that I was pregnant and that the amniotic sack and uterus looked great they just couldn't see the baby. I had my hcg levels checked a few weeks ago and it was in the 12000 range so the doctor thinks with them being that high he'd be able to see the baby but didn't, has anyone ever had this happen before? Or what should I expect? He said to carry on as if I am pregnant but I don't want to give myself false hope.... wedding dresses for pregnant women