Okay - I am not doing this to scare you, but I am going to share my son's story from when he was 9 mo old.
We picked him up from the babysitter one night and he was not acting completely normal and then he threw up. The next day he was sick on and off, but I could tell he was just not right. I was afraid he would get dehydrated so I took him to the hospital. They sent me home and told me pedialyte would help.
The next day I followed up with his pediatrician. Still they told me he was fine.
He had no bump on his head, no bruise.
Long story short, we knew he was not acting right. He just wanted to snuggle on my lap. We took him to the hospital again. My husband demanded we do some tests because you have a feeling when something is wrong.
A CT scan showed he had a fractured skull and it severed an artery and was bleeding into his brain. They airlifted him to another hospital where he had a skull sugery to remove the blood. They told us if he comes out of this alive, he may never walk or talk.
Then the next day spinal fluid gathered in the space the blood was in and they had to repeat the sugery.
This was the scariest time of my entire life.
I am happy to report that he is a very smart, fun loving 5 year old now, but if you feel something is not right - FOLLOW YOUR GUT! I feel like God gave parents a gift for feeling when something is not right.
I don't want to scare you, but if we had gone another day, Nicholas would probably not be here today. And the injury was just from him beginning to cruise and hit his head "just right" or maybe just wrong.