Small Panic Attack

I am having small panic attacks these days. Here is an example of one:

Yesterday I was playing with Elizabeth Anne. She was lying on our bed, and I was bouncing her up and down. The faster I would bounce, the more she would giggle.

Lauran was watching. Elizabeth Anne was giggling. I was bouncing harder and faster.

Then Lauran says to me cautiously, "Don't let her shake too much".

My thoughts turned to...What if I over did it? Does she have a concussion? What if she has brain damage? Have I ruined my baby!?!

I stopped bouncing. She looked up at me with big blue eyes, smiled, and kicked her arms and legs as if to say, "Do it again daddy!"

Whew..I haven't destroyed her yet.