SO and I don't agree

In June we lost our son at 20 weeks. I had a prefect pregnancy up until. It was a random chance. We are pregnant again now and are so excited but my so wants to wait until I'm past 20 weeks to announce. I want to tell family at thanksgiving I'll be 8 weeks right after we have our first ultrasound. But he is stern on waiting. I don't want to because I feel like we waited a long time to tell people the first time and I didn't get to enjoy it with family and friends. How to I help him see it my way haha or at least compromise