I hit my head for the
-first time 2.5 years ago
-two weeks after that I was watching a volleyball game from 40 feet away and someone kicked the ball and it hit my head very hard
-five months later my brother was trying to catch a ball in the pool (I was laying calmly on a raft thing) and he fell backwards bonking heads with me

And this series of unfortunate events has kept happening until now I have 9 hits to my head in 2.5 years, and I don't know how to get it to stop without wearing a marshmallow suit!

Any help would be great!

Thanks,
Margarite