First let me just say that I am so sorry for you. I had the same thing happen to me with my first IVF in May. We lost our baby at 8 weeks 3 days. It is just so unfair that things like this can happen after so much has been invested in getting the BFP in the first place.
Lots of hugs your way
and just know that you will get through this and try again. It may take sometime. I still get knots in my stomach when I think of how far along I should be but I am also excited that the next step in our journey to becoming parents is right around the corner.
Martie