vness,

Your 4 month old did not cause any injuring impact force .

So, were you diving under the bathroom sink? The movement you could make moving under a bathroom sink would never come close to the impact force required to cause a concussion. You would need to be moving very fast to suffer a concussive impact.

btw, I've bumped my head under bathroom sinks. I used to make my living working with kitchen and bathroom sinks. Plenty of contact with the sinks.

You are struggling with a severe case of Concussion Anxiety Syndrome.