First, read the book Boundaries by Dr. Henry Cloud.
Second, when you got married you left your parents to cleave to your spouse. You can not be both his wife and your parents' "little girl" because they are trying to keep you their "little girl". They will control you for the rest of your life if you let them. Speaking from experience (FIL is like your parents), this WILL destroy your marriage like cancer destroys the body.
Third, if you are comfortable with it, get into counseling with a Christian therapist. Your insurance will likely pay for it. You need to learn how to put up boundaries with your parents and re-write the relationship. A qualified marriage and family therapist will be able to help you learn to establish those boundaries and will help you talk through the situations as they arise. The fact that your parents tried to get between you and your husband's desire to establish your own family, assuming you two are supporting yourselves and not relying upon them to support you, is ridiculous.
Your parents are not going to change until you force them to change. Manipulation and emotional abuse works for them - they get what they want by doing so. It's up to you to force the relationship to change, and a marriage and family therapist (particularly from a Christian therapist) will be able to help you negotiate this tight-rope walk.
"Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind. This is the first and great commandment." (Matthew 22:37-38)