very sorry for your loss:( very similar story for me too
US at 6 weeks showed an empty sac, was told possible blighted ovum.
my betas keep going up but were pretty low
US at 7 weeks showed a baby measuring 6 weeks no HB, i was full of hope.
US 8 weeks showed a baby no HB and it was measuring 5.3 weeks, still hoping...
next beta declined and i knew it was over
lost my angel baby at 9.4 weeks naturally.
im no longer bleeding, bit of spotting and just recently my HPTS are negative.
take care sweety x it sucks!!!!