What an anxious time for you – probably not so much for your daughter. Toddlers are short for good reason – they're closer to the ground. Natural development includes that all-important 'consequences' feedback loop. If you protect your daughter from all bumps and bruises, she won't really get the body-knowledge of understanding her limitations.
Yes, she will almost certainly get bruised. And of course you should head off big owies when you can. But if you prevent little accidents now, what are you going to do when she starts running? The accidents will be bigger, and harder for you to catch. As hard as it is, allowing her to learn what will probably happen when she ________ is nature's way of teaching common sense.
When my daughter, a very early walker, was growing up, she'd ask if she could try things, like climbing a mountain of sofa pillows. I'd tell her what the consequences might be, then let her take her chances. She learned I was usually right about the risks. This allowed her to take instruction gracefully when I told her no, that thing she wanted was really too risky. To this day, she remembers and appreciates that approach. She's now 40 and raising her own son.