Is going to happen? 😭

I went to a scan two weeks ago they said they couldn't find a heart beat and they told me I was going to miscarry, I'm in the position where I'm waiting for this horrible thing to happen but I'm (tmi) I'm only got creamy cm and little cramps here and there is this signs of it happening or could they possibly have got it wrong? Some one please give me advice this waiting game is killing me 😭