My little girl is 10 months old and the last roughly month she keeps randomly putting her hand up to her right ear and will smack it over and over again at times. She was teething and gets pain relief etc but even when she's not teething she does it. Noticed she does do it a bit more when tired but sometimes she will do it even just after a sleep. She's happy enough and no temperature etc. Well otherwise. But sometimes she really is hitting side of her head/ear quite hard that it can't be normal and it is always the right side! Any thoughts?