When I left my ex husband, he had hidden massive amounts of debt from me, including lying about paying our taxes for 2 years. Because I had perfect credit when we married, I was the primary cardholder and signature on most of our accounts- and although on paper in the divorce he said they were his responsibility, in reality because he never made payments on time or just continued to ignore bills, *I* got stuck with all the bad debt and it ruined my credit. I ended up having to declare bankruptcy as the only way to legally and financially sever myself from my ex-husband and his amazing lack of responsibility. It was a difficult decision, but because of the particulars of my situation, it was the best thing for me to do. I am not saying it is the best option for you, but it IS an option.
I am sure people will send you all kinds of 'money-saver' ideas and hopefully you are doing those already. What I found while trying to get out of debt and clean up the incredible mess my ex left our finances in is that COMMUNICATION IS THE MOST IMPORTANT THING.
Other people here have said that, and I cannot stress it enough! YOU must call all your creditors, every month if you have to, and keep notes each time of who you talked to (ask for a name or ID number and what call center location they are at, so you have a record) and what they tell you. It is ALL ON YOU to do this- banks and other companies will not always keep track of what they tell you.
If you call each company and keep explaining your situation, they will most likely help you out- they just want you to keep paying! As for your student loan- get a hardship disbursement immediately and you will be able to stop making payments for a while, freeing up that money for something else.
Just keep in contact with everyone, every single month. Also, IMO, the idea of running your own home day care is NOT a great one, unless it is something you want to do or were planning to do anyway. Caring for other people's kids is a serious responsibility and can be seriously stressful, so don't do it lightly, thinking it will be a quick money fix! Good luck!