It will make you cry.
He will cry.
Your husband will check him over and assure you that he is fine, he may be sore, but fine.
His feet are not bruised or swollen.
You will believe your husband, but still feel bad.
You will watch his every move.
You will watch him hold his little foot and cry/whine.
You will cry and scoop him up to try and comfort him.
When he doesn't stand up in his crib you will think that you really did hurt him.
You will watch him not want to stand up and you will cry more.
After 2 days of you crying you will take him for X-rays just to be sure.
The Dr. will tell you he is fine. Just a little bruised. Give him a few weeks and he will be as good as new.
You will take sweet baby home.
You will then notice that every time you tell baby "no" for something he holds his little foot to whine.
You will figure out that baby is playing you. He figured out that he gets lots of extra attention when he holds his foot and whines.
You will still be glad that you know he really is okay, but wow, you have your work cut out for you. This kid is good.
Side note - If you ask him where his foot is, he will point to it and pout.