Thank you so much for your reply, Mark!

I was assured by UPMC that even if a tennis ball hit my head, I wouldn't get another concussion. They said I wouldn't be more susceptible to another concussion once I heal completely. I'm usually much better at fighting off the anxiety and blowing these things off, but I just came back from my first big road trip (6 hours each way) and it REALLY messed me up. My vision and neck issues are back and it's pretty disheartening. And then, to have the baby's head hit mine concurrent to all this makes it difficult to separate the trip issues from the hit!

I didn't even think about the baby's skull being soft. I would imagine that would lessen the impact even more. Thank you for mentioning this.

I'm choosing to look at it like this: I just pushed myself harder than I have since the concussion with the trip, so of course it will reveal lingering issues.