My family doesn't understand

I had a miscarriage the end of April it was my first pregnancy I was so exited I had just gotten married and everything seemed to be going right until the day I was at work and noticed I was bleeding and that's when my world turned upside down. I knew right away that I had lost my baby. One thing I'm having a problem with is how depressed I've been since the miscarriage. I've gotten better but I still wake up at night crying and have dreams about when the baby left my body. My husband and my family don't understand how I can be so depressed due to the fact that I was only pregnant for 6 weeks and that it happened 6 months ago. The keep telling me to just get over it and it's no big deal. Am I crazy for still being depressed? Or is this normal?