Normal or baby blues?

I had my daughter a week ago, and lately I just feel off. Before I was pregnant I struggled with depression and for a while everything seemed okay. There are times now where I can smile and laugh, but lately I’ve been crying, agitated and emotional. I know being a new parent is tiring and I know my hormones have to get back to normal, but I’ve also noticed myself losing interest in my husband and our daughter and I feel horrible about it. Could this just be my depression now that my hormones are crashing or should I talk to my doctor about postpartum depression?