Expenses while in between pay from changing jobs

I went back and forth for a while about whether or not to do this, but due to our current situation, I decided to suck up my pride and finally ask for some help…as most people know, my husband and I recently separated and our kids live full time with me. When I began working, it was designed to be a part time job for “supplemental” income. Now that we’ve separated, I will be getting another job once the school year finishes, however, there will be around a 1 month break in between my final paycheck from this job and my first paycheck from my new job. I was hoping to be able to save up more money, but supporting 4 people has taken every penny that I have made, even with substituting 5 days a week. Anything at all will be so helpful and we will be so, incredibly grateful for.