So stressed about my lack of retirement

Une mère célibataire de 37 ans s'inquiète pour son avenir financier et sa retraite en raison de son manque de planification et d'épargne, avec seulement 5 000$ dans son 401k.

I'm 37 years old and a single mom to a 2.5 year old. I'm in the middle of a divorce and I have primary custody. Up until this point I had never thought about retirement or knew anything about investing, and realizing how much I missed out on when it comes to compound interested makes me sick to my stomach. I am losing so much sleep at night just staying awake, feeling terrified about my financial future. I never want my lack of financial planning to be a burden on my daughter and that's what scares me. I have a huge drive to give us a better future, but I don't know how to start. I currently live with my parents and have for the past 2 years. My mom watches my daughter 2 days a week, no charge, so that I can work (22-24 hours) I would have to enroll my daughter in daycare to work more, but then I can't work more than 30hrs at my current PRN job. I would have to look for another job, but with our custody schedule not finalized it makes it difficult to know what hours or days to look for. I was hoping to have the divorce final by now, but it's dragging. Another obstacle is my daughter is going to be tested soon to see if she needs more speech therapy. The schedule would be Mon, Tue, Thur, Fri for 3 hours, which would affect my current work hours. There's so much uncertainty at play. I don't have much going into my 401k. I just opened it last year, so I have $5,000 and that's it. I have no idea what half of my husbands retirement will be. I don't think he had much going in, so I'm not hopeful that it will be very much. My debt is $2,000 on a bed/mattress and $16,000 on my car. I have a 2017 paid off Mustang that I don't drive much now that I have a toddler (It's hard for me to sell, mentally. I love it and had hoped to pass it on to my daughter) I have $11,666 in my emergency fund. Current lawyer fees are eating up a lot of what I would be able to save and I don't know how much longer this will go on for. I love the idea of house hacking, but that's almost impossi