I hope you heal quickly and the pain goes away. I too back away if something is falling and let it go. I'm a wuss. Don't like to get hurt.
I have to share this story about rotary cutter safety. It probably helps that I have a great fear of being cut, because I never set my rotary cutter down without the blade guard. In my quilting class the teacher related a story of one of her students from two classes before. This lady did not show up for two classes in a row and everyone was wondering what happened. On the third class, she came in on crutches, accompanied by her husband, and with a big walking foot all bandaged up. What happened was she was working on the backing fabric of her quilt, which was a lot of fabric piled on the table. She set her rotary cutter down, was moving the fabric around and the cutter was knocked off the table and fell, blade down of course, on her toes. It cut her so bad, she had tendon damage and required surgery to repair. She was in the hospital for several days, and endured a lot of pain. Especially when she got the hospital bill.
The teacher said those cutters never fall with the handle down and the blade is like a flying razor blade. That story got my attention.