Has your baby gone through a phase of repetitive movements, like shaking their head and hitting their arm against- well everything? It’s just over and over again. It doesn’t bother me, I just don’t remember this with my first. He’s been slow with his milestones and I’m just over thinking everything. My first has autism, there were other things with her, looking back, but not this. What concerned you with your baby that turned out to be no big deal?