Empty sac a week ago!

Yda
A week ago in my first early US showed an empty sac! Not yolk sac! Not fetal pole!
I was grieving and ready for today to have bad news, but my baby showed up and have a heartbeat! A little low but my Dr said maybe his/her heart just started to work. 
God has the power to let us know how big is his love for us! I was very sad and thought God didnt love me but he showed me my miracle wasnt dead, it was sleeping! Thank you Jesus!!!!!!