I need advice: I am a nanny part time but my fiancé just lost his job and I am the only income. I…

I need advice: I am a nanny part time but my fiancé just lost his job and I am the only income. I just started with this family a couple weeks ago and it hasn't gone very well for me or them but we are going to keep trying. I am in need of a full time job but don't want to lose being with my son or this family. They told me they don't need any extra care then the days they have set but at the moment that doesn't make ends meet for my family. What should I do?