Can a 31 year old mother of 2 really go back to college? Day 1

This is an accelerated 7 months of school for Medical Assistant, plus 30 days externship.
I get to Everest College (a trade school, here in Thornton CO) on Monday morning at 10:30am. I have not been to school since my daughter was about 1-2 years old, (now almost 11) I get all my books, which are a huge suitcase full of books, usb drives, blood pressure cuff, stethoscope, goggles, thermometer, and 3 sets of navy blue scrubs.I am rolling with my new backpack from my husband, and now rolling a giant bag, that rolls like it's in pain. I am taken to the bathroom, and told to chage into the scrubs, which are a size S. I walk into the class, with scrubs that could fit 2 of me, and I just sit down. I am informed that I should probably exchange the scrubs for extra small.
I just sit there, and I feel like a total fish out of water. I am not shown what to do, and everyone else has already been going there for either 1 month, or on their last months (which are called Mods) I'm pretty lonely at this point, and wondering why the hell did I sign up for this torture.
Everyone is younger then I am, and some of them don't even have GED's I have come to find out! So I make it through the first few classes, and then go to the lab. I observe how everyone just kinda slacks off, and I feel like I am really at the wrong place. I left the day feeling disappointed, sad, and really lonely. I mean why didn't I go to college when I had the chance 12 years ago? I am for sure kicking myself in the ass now for that!!
Day 1- Learned what books I needed for which day, got a student ID, and was told that I look professional and probably won't have an issues with having to hide tattoo's or piercings..(really?) Leave at 2:30.
Classes are everday 10:30 to 2:30.