Guitar Pain in Pinky?

I picked up the guitar a couple of months ago, and am not really sure what to do, so I've just been practicing lots of scales. I guess I have small hands, because it's very hard for me to play from the first fret (index) to the fourth (pinky) on the lower frets. My pinky has been really sore lately because of this (not calluses; I already have those) and I have a lot of pain outside of practice, especially when I bend the joint. Is this normal, or should I be concerned?