Losing my kids

I suffer from depression, bipolar, and anxiety. I just lost my children to my ex. And that really is sending me over the edge. I was in the hospital in May and that was my fourth time in 9 years. I feel weak and worthless. I can’t seem to get around this. My husband is a great support system but I don’t think he fully understands the magnitude of how losing my children has affected me. Does anyone understand? Or can talk me through this?