Help! Sos in law advice 🤬

So my bf and I are having our gender reveal in October. We decided to do just a few friends and his mom and his step dad,and his dad and step mom and his siblings along with just my parents and brother. So about 20 people.

I’m not inviting my relatives because I don’t talk to them, but even if I did, we still agreed not to do relatives.

So his grandma and aunt who are 14 hours away was told by his mother to come to our reveal. I don’t have a strong relationship with his mom, aunt nor grandma and not once have his gma or aunt asked about im doing or the baby. His mom invites them to our party and he got a text from his aunt saying she and his gma are coming. I’m pissed! I told him to say something to his mom about it not being her business to invite people without permission. She said well they’re fanily I figured they were invited and if they were they would get an invite from US. So my bf said well what’s the big deal if they come? I said we agreed for no relatives to come, I don’t really like them and this isn’t a huge family reunion on your side with your mom and dads side seeing each other first time in 20 years since your parents divorce. Mind you, theres 25 of them plus his friends and only my parents and my brother for my side and it’ll take place at my parents house since our house is too small.

I told him why should my feelings be hurt to protect there’s. He said it isn’t about sides and feelings. I said they don’t care about me or even ask about this baby. They’re jusy coming to see you and the cousins and using this baby as an excuse. If they made effort to even ask about how I am and seeing the ultrasounds maybe I’ll feel different. He said not everyone has to show excitement the way you expect it.

This part is for us and this baby. It’s a huge deal. It’s our first and the first grand baby for our parents. I know if they come I’ll just be upset and wanting the day to be done with.

What do I do?

Edit: forgot to mention, his aunt and grandma said they were “relieved” that in jan our pregnancy ended up as ectopic since it was out of wedlock. That baby was planned. So is this one. Itsalso a red flag on why they want to come to this one.