I was going to..........and now I am not!

I was going to go and have Mirena put in next Friday but DH looks at me today and ask me how long realistically will it be until we are ready to start trying again. I truthfully told him in about a year or so. My Mirena is going to cost me about $500 and it really isn't worth having it put in if we are going to have another baby so soon. For it to be cost effective we would have to wait 18months and I don't think that I want to wait that long. I am really excited. I thought about asking my OB about the mini-pill but DH just using a condom for the next year. I am I crazy? No just excitied to be a Mom of 2!