I'm in a pickle and I need y'all's advice

So basically, I just had a baby six months ago and I'm on a leave of absence. I was planning to be on a leave for another few months. I worked the entirety of my pregnancy and now I'm thinking I should go ahead and go back so that I could go on another leave of absence after I have this baby that I am carrying. My question is would I qualify for another leave of absence, regardless of how much I work in between now and the birth of my next baby?