Post partum depression

I have really been struggling and my poor husband doesn't know how to help. I don't now what to say to to help him, help me and it's gotten so bed that I am quite literally running my self to death. All I do is for my baby but I just can't stop. I only eat if my husband makes me something and even then I don't sometimes. I don't drink anything. I don't go to the bathroom and I don't sleep. My husband will try to take care of the baby so I can rest but I can't leave my baby. I'm in Therapy and takeing anti anxiaty meds but I don't know what else to do. My husband is at his wits end with me and is tring to help but I just don't know what to do any more to help my self.