announcing on social media

sh
soooo me and my husband are arguing about when we wanna post on social media that were pregnant with twins. I'm 11 weeks and 5 days and I wanna tell people next week. we've been having a little bit of complications and that's why he wants to wait until we find out the gender (in July!!!!!) and I definitely don't wanna wait that long. 
what are your thoughts?
we already have a son and we announced his as soon as we got our ultrasounds and felt that was too soon.