having a hard time..

We went through a miscarriage a month ago. We're both crushed and he went through it all with me and was so strong for me. I knew he was upset but he wasn't showing it as much as I would have liked. Lately he has been so up and down. He's not happy very often anymore. I just don't know what to do. I feel awful that I'm not able to help but I'm going through it too... Any advice?