Just some more tidbits
As hatchlings again yes this is common. You do however want to take action now to ensure that it gets to know your scent and your motions when a handling session is about to occur. There are many ways to go about this and if you use the search feature at the top of the site and put in "handling" or "aggressiveness" I'm sure you'll find more. Techniques I found that were helpful with mine (who was a rattler and tongue flicker when I first got it):
1) Always was your hands before and after handling as a snake will not be able to tell the difference between your scent and things you have touched prior to holding.
2) Do not move your hand around all over the cage attempting to grab the snake many times. Instead you want to scoop your hand underneath, and need be if you have a snake that darts quickly away grasp him at the body a third of the way down. Not hard, but firm to not let him writhe all over. Do this for about a minute or two while having the rest of his body in your palm (not dangling). This will or should calm the snake down some.
3) Try the shirt method. Take any old shirt or light towel and drape it over the head of your corn as to cover him up. Do not smother. Scoop your hand under the snake and pick it up, then remove the towel.
Your snake may be naturally scared for a while and this is common. But if you try these techniques I am sure that the snake will calm with age... however, there are the occasional ones that are untameable. But if yours is a hatchling and you start now you have a good shot. Good luck.
Lastly, before I forget. When feeding, use tongs and do not leave your hand in the cage for a long time, simply pick the mouse or pinkie up, place it on whatever bedding you may have and pull your hand out. The snake needs to be able to differentiate your hand and tongs (as one resembles feeding, the other holding). One last comment, make sure there is not 2,3, 4 people around for a while as the snake is already scared and does not need a lot of commotion. Also limit handling to 2-3 times a week and do not over handle as this can lead to stress (in some cases). And definately wait to hold them until they have passed 2-3 days after feeding (normally). You don't wanna end up with a mess, especially if your snake is stressed to begin with. Hope this info helps.