Miscarriage

So I had a miscarriage last Sunday and I was completely devastated and I can't seem to get over it and now all my fiancé and I do is fight becaue I can't talk about it. It just hurts to much/ I don't want to lose him but every time I look at him all I can see is the miscarriage and its all my fault. If only my body was good enough to have a baby. Its all my fault and I cAnt get pAst it. Plz anyone advice would help