This is pz df,

Lily wasn't feeling well this morning. She complained of a headache, and got up to get some water. She blacked out in the kitchen and hit her head on the handle of the pantry door. I was in the bathroom so I didn't realise at first.

She called out to me and I found her on the kitchen floor with a small cut on her forehead.

Now she is in bed, she is very drowsy, light hurts her eyes, she has a headache, she feels naseous, she felt like she wanted to throw up (no longer), she's pretty coherent but very drowsy.

I don't really know what to do, we haven't experienced concussion before. Do you think it's just shock, or a concussion? Obviously we'll go to the hospital if we have to, but lily would prefer not to.

Thank you in advance.
Ben.