Hormonal and Emotional

So I'm pregnant with my first baby and it's been an emotional roller coaster of emotions. But this is something i know I'm not "overreacting" on.

Before I got pregnant my boyfriend and his family used to hang out and have a fun time. Sometimes we'd drink or smoke weed but not all the time. We'd all hang out and it was fun.

But now that I'm pregnant they're so awkward to me. They leave me at home and make plans in front of my face. Like i know that I can't drink or smoke but I'm not gonna ruin everybody's fun.

But its getting worse now they'll just show up and be like "let's hang out " and leave me home alone to babysit their kids. I talked to my boyfriend about it and he was like "oh it's fine I spend time with you all the time and it's good practice for you" I don't want to babysit these kids. They don't even ask me if i want to they just drop them off and leave.

I tried to talk to my boyfriend about it again and he told me that i was making a big deal out of nothing

I'm being talked to like I'm crazy and I'm being told I'm being hormonal and that I'll be fine.

So my question is Am i overreacting? Or do I have a valid point?