Another disappointment

So a little back story in 2008 I had to have an emergency c-section with my daughter at 32 weeks (I had preeclampsia). So I meet my husband and we get married and we want to have a child together. (He takes care of my daughter just like his own and his family call her their granddaughter) So in 2016 we get pregnant with another girl had her named picked out and everything. At 25 weeks we lost her do to high blood pressure (it damaged the placenta and she outgrew it). So my doctor told me at the end of last year we could try again so I took time off work (to keep bp down) and we started trying. One month I was 9 days late and it was a negative test. So the next time I was late I waited. Until our anniversary 4/1 and took a test. It was positive. Went to the doctor to confirm and they said we were. Yay!! Then today we had a vaginal ultrasound and there was a sac but no baby. It never even formed. Ugh my husband is so discouraged and it stinks because we did everything right and it was nothing we could do. Sorry just had to let all my emotions out here because we had only told our parents and daughter in case something happened.