Oh, Katt ! First of all, let me say how sorry I am; there really are no words right now
As for that memory box - if it is going to make you feel better to remember the baby each time you look at it - go for it. If it's going to hurt you each time you look at it, maybe prepare everything in the box, but put it away for a while. It really depends on how you feel.
But, of course you should commemorate (sp?) the baby somehow. Whatever way you choose will be the best one for you.
As for your husband, well, he's acting like a jacka$$ right now. This is the time you need him the most. I know you love him, but he really needs to think about you right now and not himself.
I had a m/c in 1991 (I was only 19). It really hurt me for a long time afterwards, everytime I thought of it. But, just know while it never goes away, the pain does lessen with time.
Again, I'm so sorry you have to go through this
Tracy