Lost a twin...

So I found out at seven weeks I was with twins...I went for them to be checked up on today.. one was 9 weeks and 2 days the other was 8 weeks and 1 day with no heartbeat. I was so super excited... and now I feel kinda numb.. All I've done is cry....my fiance is trying to be supportive, but it's so hard to see two heartbeats and the second just disappear??? So confused and upset...