Feel like a bad wife!

My husband wants a child so bad we have been married for 5 years and it was always the plan 5 year was baby time. I just want a baby right now am 28 and want to be selfish it know I'm getting older but I feel like waiting until 30 my husband wants it now and thinks we are ready. We got into many fights because he said he feels like I lied when I said 5 years. He is actively trying to make a baby but I'm still on the pill he doesn't know. How do I get him to understand. I want a child just not this second. Please no mean comments.