Haha, this is the first week Little Beansprout start to roll over and hit his head against the floor. There are at least two red places on the back of his head when I checked this morning. He didn't cry about that, which is strange. I think unless it really hurts, otherwise little baby does not scared by little pain. I remember that I was crying loud when I got injection when I was little. I do not cry now but still will be scared by the needle, which honestly does not cause a huge pain. In my opinion, the fear is not caused by pain but the needle. My strategy for the Little Beansprout is that rather than telling him that the injection is not painful, I will be honest and tell him the reasonable expectation. Hopefully he will be a brave boy.