Allowed to be upset?

So I’m almost 36 weeks, we have had our name picked out for our little boy for a while and I’ve kinda kept it a secret. Just because it has a lot of meaning to me. The only people that truly know it is our parents. I don’t really post much on social media very often. So much people don’t even know I’m pregnant. But this morning the first thing I wake up to is my MIL posting about how she can wait for our little boy to come and said his whole name. I got upset and showed my husband. He said what’s the issue? I said hello! First it’s rude if they knew it was a secret and 2 you can’t post about someone else kid! Let them be the first to say the gender and name. Like cmon. He said well just call her and tell her to take it off. That’s not the point. The point is she knows better not to put it on there in the first place. Ugh. He’s making it seem like it doesn’t matter. But it does to me, he doesn’t understand.