Am I overreacting?

An

It’s one week since I delivered my still born daughter at 20 weeks and 6 days. We found out the week prior I had no amniotic fluid due to no functioning kidneys in the baby. My SIL has her son yesterday. Today my husband and I had planned to go out to lunch to make this Monday better than the two previous. In the middle of our time his sister called him to talk about the baby. I cried and was upset that he answered the phone. Am I over reacting and being un reasonable? He is now pissed at me and has told me I need to just get back to normal and that he feels like I hate his family. I can’t take him being mad at me as well as grieving. I feel like I’ve lost my only person (my husband) that I can talk to about how I feel. He is also mad at me because I’m having a hard time thinking about celebrating Christmas and this year. I don’t have my first counseling session until Wednesday. I just feel so lost and alone.