Feel like an outsider

I am being treated like an outsider. If I tell H that his parents treat me like that, he says that I shd feel part of the family and that the problem is me and not his parents.
I can give u lots of examples...but.I think most of u can understand.

Sometimes I feel soo bad. I just want to run away.

It's like my husband , my kids and his parents are one family and I not part of it.