I have baby fever but I don't think I'll ever be ready

I am about to be 25 and have been married for almost 3 years to my husband (27) who is military. We have talked about having kids and have always said that we would start trying when we move next in a couple years. But I feel like I'm never going to be ready for children. I have baby fever when I see a baby but as soon as I see a kid older than 5 it goes away. I currently don't work and don't know what I want to do with my life.

I don't want to have a kid before I figure out my career but I'm scared that I'll never be ready or that when I am it will be too late. I also don't want to stop my husband from his dream of being a father.

Anyone else have this 5 second baby fever than anxiety afterwards?