Firstly I want to congratulate you Hun, so happy for you and it happened so quick! And as your keeping shhhhhh, your secret is safe with us :)
secondly, I am so sorry you're feeling like this, unfortunately for us we become mothers the moment we get a positive test, men become fathers when the baby is here. If you husband is like my partner then it won't sink in until either you start showing/the scan/ or around the time he can feel the kicks. I'm advice would be to talk to him, try and remember that us pregnant ladies tend to get emotional, in fact my partner commented on my mood yesterday, ha.
Again well done to you x