#sore toe?

I got a problem, and I am not really capable of going to the doctor's at the moment just because I got stuff to do. Two days ago, my left big toe started to hurt a lot whenever I was walking around. I didn't do anything to cause it to become so painful, though. It still hurts today, and it's affecting how I am walking. I think I could have pulled a muscle in the toe, and if that's the case, I'll be relieved and will try to stay off my foot for a couple of days. What do you think it is??