R.W.
Were you aware that your husband was planning on getting custody of his girls when you got married and had your son?
That can make a big difference and you really don't say in your plea for help. The best advice I can give you is to talk what ever is bothering you over with your husband and see if you can solve the problem. Also you might want to talk to the interfering family members. Maybe if you had control of the situation it might help. Good Luck!