Feeling sad and alone

2 weeks after finding out we were pregnant, my husband and I found out that his mother has stage 4 cancer. I'm about 6 weeks pregnant and I've been crying every day for the past two weeks. Our pregnancy was planned and I was expecting to be surrounded by positive energy and support but that all seems bleak. I feel selfish because I know my husband needs to help his mom and dad but I'm going through my first pregnancy and it all feels like a nightmare. Today I broke down and my husband reacted terribly. I'm so sad for me, for my husband and for my baby who is probably feeling all of my anguish. I also haven't told my close friends about the pregnancy or anything that's going on in my life right now so I feel alone. I just felt the need to vent here and post for the first time. Thanks for listening.