Terrified

I got married two Saturdays ago, last Saturday I found out we're pregnant... I had two miscarriages last year and when I saw the positive test I completely broke down. I want nothing more than to have a family but what if I can't? I'm afraid to think of names, get new clothes, everything. I don't want to jinx anything. I just don't know what to do, I'm only 25 and I have no known medical issues... My husband's upset that I'm not happy, he doesn't understand I am but I'm also so scared. Sorry I needed to vent and see if maybe anyone else has been through this and could offer some advice.