Boyfriend issues.

So I'm 17 and my boyfriend is 23, we've been together for a little over a year. We're expecting in May, we've known for about 3 months and he refuses to tell his family yet. The only people who know are his dad and 2 brothers. When we found out a few days later his grandpa died so he didn't want to tell them until after the funeral, which I totally understood, but then it turned into after his dads birthday, then it turned into after thanksgiving, and now it's when we find out the gender. I'm getting really frustrated because I have to wear baggy shirts/ hoodies and sweatpants. It just makes me feel like he doesn't care about my opinion about it.

I just don't know what to do, advice?