Anyone else keen for a 3rd baby?

I'm hoping someone could give me some advice or guidance. I have two boys age 3 and 5 who are my entire world. Me and my husband always said we wanted two children but ever since I had my second I've always felt like I want another. I feel incomplete and hate the fact I feel this way. But my husband does not want another at all. He's 100% certain. He didn't like the baby phase and hes happy with two. He says we can't afford it, that the house isn't big enough, that mentally and emotionally we couldn't cope and that we have no help. All of these points are annoyingly accurate and we have zero help from family. But yet I still feel this way. Has anyone else been in this position? Im 35 soon so I feel like time is running out. My husband works full time and I'm a stay at home mum. Thanks :)