Try that number on. I still don't know how I stayed conscious enough to do the test. I was shaking so hard I could barely do it, and I was actually drinking some milk and took a bite of something while the strip was being read.
Our bodies can adapt to ridiculously low numbers. I usually start feeling weird at around 60 or 70; since I've bottomed out many times, my body has adapted.
Another reason to give up refined carbs, folks. I do not eat bread, crackers, bagels, muffins, pastas, or candy. An occasional bite, and the once-a-month slice of pizza are about it. I found it easier to deal without those things than to regularly freak out and wonder if I was going to wake up on the sidewalk or the floor at school.
You can reduce your tendency to crash in most cases by eating frequent small meals, avoiding high-carb foods (refined carbs, not fruits and veggies), and keeping some sort of snack (like nuts and raisins) with you in case you start to feel strange. I recognize the symptoms now, but it took years to get good about it. I also always have a monitor, just in case there is weirdness and I am wondering why I feel strange.
MeltingMama seems to have a particularly unfortunate crash-all-at-once scenario, and I do not envy her the precautions she has to take. But most of us, with a few simple adjustments, can manage well.