Possible Kinks on my Baby Corn Snake?

[cornsnakelover1]

Okay, so I JUST bought a baby corn snake from Petco a couple days ago. It is probably about 1 - 2 months old, and only about 9 inches long. The first couple days I had him, I carefully inspected his body and did not find ANY imperfections. I also did it this morning. But when I got home this evening, I took him out of his cage and I noticed about 3-5 "bony feeling" bumps on top of his backbone. They are about halfway down his body and lower. They are also about half the size of a pea. Does anyone know what these are? The snake still have full mobility and movability where the bumps are. Are these possibly kinks? Please help!