My husband just doesn't get why I'm crying all day.

Husbands and wives are naturally different from each other and their grieving process will reflect that. In fact, no two people will experience grief in exactly the same way. And, in general, men and women see things from different perspectives. Women feel much more connected to the pregnancy that is growing within their own bodies. It's part of their physical.  Understandably so, when there's a loss she would feel the pain in a much deeper way. For the husband it's definitely one step removed. I would suggest that you try to find advice and support from fellow women. We have our own hormonal changes and it can cause ups and downs and mood swings. We can't expect our husbands to understand what we're going through, especially if its a first miscarriage, it might be something very foreign to him. He would need his own type of support.