Busting to spread the news

I'm in a dilemma! I found out about a week ago that we are expecting. I am dying to tell everyone but my husband wants to wait. We had a son on May 29th 2014 that was born with a severe heart defect. He lived 12 days. We have been trying to conceive sense September of 2014. We didn't tell anyone that we were trying again. Ppl can be very opinionated about us wanting to try again. We have 5 children already. We take very good care of our children. It's not like they help support them. We don't live off the government, we both work and I don't know why he let's it bother him. How long should I have to wait to spread our good news?