My 2 year old was playing and climbing at home last night and slipped backwards, causing her to tip her head backwards and bending her neck far enough that we heard a series of 4 pops (sounding like knuckles cracking). She immediately began crying and did so for about 3 minutes while we comforted her and then complained of neck pain for about 20 minutes afterwards, all while resuming playing with her toys, eating snack, and running around the house. I should note that she did NOT hit her head, as we were able to catch her in time, but her neck bent back pretty far. She went to sleep fine about an hour later, playing peekaboo and in a good mood. About 5 hours later, she woke up in the night (as she has been doing lately) and when she was walking around, we noticed she seemed stiff legged. When we asked her if anything hurt, she started touching her right leg and saying ow but also did the same thing with her left arm. She did not react to us touching either, nor did she react to us touching her neck at this point. Is this a sign of a neck injury that she could have suffered or is this to be expected after perhaps straining something? Our pediatrician s office opens in a few hours and we re planning on calling but have been nervous wrecks all night!