L.C.
You and your husband need to go to counseling if you both want this marraige to work because step-parenting is VERY difficult! I know from experience. My step-children are 25 and 22 years old and I have been married to their father for 15 years. We have been together for 21 years, total. There are alot of things I could say to you but don't have time right now. If you want to discuss more you can email me directly. Let me know if you would like that. Good luck!
P.S. The first year married is the hardest.