I think if you are arguing right now without the stresses of marriage, you will have a seriously tough hill to climb once you are married. I suggest stopping the wedding plans and visiting a couple's counselor to sort through your issues. Bickering can really poison a relationship, so you need to find a better, healthier way to deal with conflict and disputes than this.

Also, speaking only from personal experience, not saying your piece in a conflict situation leads to resentment and in my case the dissolution of the relationship. Both parties in a relationship need to be heard. So I hope you do go for couples counseling and I hope you find your voice.