Maternity leave

Calina • Married to a wonderful man. Proud mommy of Kylen 9/29/2011 and my Angel baby Adrienne born sleeping on 9/24/2009. Pregnant! due 9/7/2015.
I'm terrified of how I am going to make ends meet while I'm on maternity leave in September. We are going to start trying to save what we can until then, but there is no way we will save enough to be completely comfortable. I also know that we will have to budget, and cut out unnecessary costs, but other than that what are some other options? I am offered no benefits through my employer including no short term disability. I'm kinda freaking out thinking about taking care of a 4 year old, and a newborn. My husband has an ok paying job but definitely not enough to support us solely.