There are always reasons behind big decisions like whether and when to have a baby. If you want to become a parent, it’s important to first be on the same team as partners. Do you understand why your husband doesn’t want you to get pregnant right now? Is there a compromise that can be reached in regards to timing of the pregnancy? If you can’t talk about it without major arguments, consider seeing a couples counselor, who might be able to help you talk through your differences of opinion and come to some agreement about when it will be right for you to have a child.
You and your husband need to come to a concensus on what it is that you both want. If at the end he doesn't want a baby, consider adopting a small child. If he doesn't want children period, you need to leave because you will eventually hate him for not giving you something that is so important to you.