First off, I am so sorry that this has happend to you. It does sound as if this was a for profit school. Get a copy of your transcripts and your record at the school today!!
Then go to your local community college with said transcript. Make an appointment with the school's guidance counselor. See what credits they will take, see what you need to take to get to your RN. While you are at it, you might as well take what you need to become a BSN. This seems to be the preference. Apply for financial aid. Go to your high school website and see what they have as far as alumni scholarships
One of the craziest things going is that these for profit schools seemingly making professional adults take and retake "modules" for a large amount of money, and holding hostage advancement for a bizarre amount of time (5 years, SERIOUSLY?!?!?!). Also making one believe that the ONLY way for one to obtain a degree is through them. Which is just not true.
If I had a dime for every person who had to retake stuff, that they "ban" one from retaking for years (and think about it, you will pay off your student loans by then, and again be able to borrow the max amount for their "requirements" at that time) I would have enough money to get my PhD!!
Being a paramedic is awesome. Being on the street in one's 40's not so much, so I get it. Perhaps now is the time to try for some per diem at your local ER? It would get your foot in the door at the hospital as well.
There are ways to do this. I really think some of these "bridge" schools can be scamming. At a great cost to the well being of the student. Clear your head and go forward with confidence. Unless there's some contract that you can't transfer, start looking at new schools today!! Even if you had to start at square one, it is less than 5+ years!!
Best of luck in your endevours!!