Op you are married now, so the situation unless you get divorced is something you will have to learn to deal with.
I personally imagine you to be correct in thinking they are judging you, I suppose they must be in some ways - and I doubt the posts on here are reassuring to you, that they are all so kind and welcoming really it must be ringing a rather hollow tune.
My best advice? Have your own friends that you can be real with, and you are able to share your life with with authenticity Have your own life/career/aspirations, do not hang your self esteem and achievements on your husband's salary/careerr. Choose to spend as little time as possible with this crowd, limit it to maybe once or twice a year and field out the unfriendly ones altogether.
Agree where your children will be schooled, and how they will be parented before you are pregnant, he may have some very fixed ideas about boarding schools at seven years old, and you may have dreams of homeschooling in the countryside with wild animals for company.
You are married to the man, not his circle of friends (hopefully). So he can meet up with his chums etc, you don't have to do everything together.
I don't think you will change what they think of you, but you can limit how much exposure you have to it in a heartbeat. You can remain confident in yourself, your abilities and your roots.
Don't change who you are, or pretend to be something you are not. At best you will look fake, at worst you will lose your self identity altogether.