I cant keep my head above water.

I work full time, around 45 to 50 hrs a week. I have a fiance and a 6 year old. I make decent money, ride my bike to work, and we don't do anything that costs money. My fiance is always looking for jobs and doing the best she can but she takes the car to pick up and drop off our son at school. She can't seem to get hired because of her time constraints. We don't really have family or friends close by to help either. No baby sitters etc.

I have been promoted twice at work and still don't make enough. My landlord keeps raising our rent and we're so far behind on bills I feel like im going to tank my credit score.

What else can I do?

UPDATE*

SHE GOT A JOB!!!!!!

Someone is finally working with her. Thank you for the ones who actually helped with the question and didn't just start trying to pick our lives apart.

I'm still going to try and find something from home because I'd love to start my own business at some point.