DH won't even acknowledge pregnancy after last two miscarriages.

I had two miscarriages in the last 15 months. Passing both "due dates" and one "miscarriage anniversary" caused me to go into severe depression. I am now 4w with my rainbow baby. I'm over the moon thrilled, and of course, scared to death. I told my husband yesterday and his reaction was briefly positive and excited. He then got very silent and said he doesn't think we should talk about for at least a month or more. I'm not sure how that's possible when it's literally the only thing I can think about. Not to mention the all day sickness, sore breasts, and emotions.