How many head bonks is too many?

Kiddo is 3.5. We had our share of head bonks when he was learning to walk, but nothing major. The worst was a fall from 1 step onto a tile floor, backwards. That sound of a melon being dropped on the floor will haunt me...Anyway, on Saturday, he was goofing on the couch while I was in the bathroom, then I heard a thud and a cry (we have hardwood). Within seconds, a big goose egg on his temple, ice, kisses, cuddles, all good.At school yesterday, he was running, tripped, and smacked his forehead off of their floor - laminate. Big goose egg on his forehead, ice, cuddles, all good.I know kids are made of rubber, and I wouldn't worry too much about a single head bonk, but should I be concerned about multiple in a short space of time, or are they all truly "independent"?I have had 4 (confirmed) concussions in my life from stupid accidents, the last one cost me 2 days of memory, so I'm a little paranoid about head injuries.TL;DR: Kiddo keeps banging his head hard...do I need to worry if they occur close together? via /r/Parenting https://ift.tt/2K22EB4