Went to put my 3 month old son down on his play mat and must of let go too soon because he kinda dropped onto it. He cried for a couple minutes napped in my arms work up drank an ounce of milk and is now playing normally on his play mat. The play mat is cushion and was on carpet. Should I be worried? FTM I hope he’s going to be ok I really don’t want to take him into the ER. My sister says he will be fine she has twins.