Not a normal response ( kind of long)

So, I had my first appointment today and the doctor did an ultrasound. Everything was perfect and where it should be. What concerns me is that I had almost no reaction to seeing my baby. I love my kids and we were definitely trying for this one but I just can't seem to feel anything no matter how much I want to. I don't want to tell my husband because he'll just say that I'm depressed. I had a miscarriage the beginning of last year and (because of a different issue) my whole family turned on me. So, I definitely have experience with depression. This isn't like that at all. I'm the happiest I've been in a long time. We moved away from everybody we knew, we're in a great town and I'm making good friends. I just don't understand why I'm so numb about this baby.