I want another baby!!!!!?

I'd love another baby, mine are still young but I want to have 4 within a small gap so they grow up close, that's really not an option for us at the moment, our house is too small, we don't earn enough and my husband has medical problems, but I still want it! I just got on a birth control I can't be tempted out of, I'm on the depo shot and while I can opt out every 3 months I'm hoping reason will win on those days!