Miscarriage and Misery

I just found out today that I had a Missed Miscarriage, meaning the fetus hasn't passed. I can't even find the words to describe how I feel. Not living anymore is truly the way, but I know I have to try to be strong somehow. I have comfort and support from my parents, sister and niece and nephews but my fiancé was not supportive at all. He just won a physique competition yesterday and he's on top of the world and he got mad when I told him and felt "dead" inside. He said how could I bring this type of dead energy to him, when he is on a high from winning. I feel so terrible, I feel so much more guilty, I just want to crawl somewhere far away. I'm sorry to share this bad news, but I don't know what else to do or feel.