My mother in law dosnt want me to have anymore kids...?

Tell them to stay out of your business. I have a lot of issues with my inlaws and I know how hard and difficult they can be. You guys are not to young, if you are responsible and are taking full responsiblity of your first child then they shouldn't have any right to tell you guys what to do. But if they are taking care of your kid then ya they might have a say. But just remember, its your life, not theirs and each and every decision is between your husband and you. You are married and you have to respect his parents but do not have to answer to them. Do what you feel is best. It sounds like you really need to move out on your own sooner than later! Good luck with everything.