Not Balance

Last Friday before I sent Bb-G to nanny's house, Bb-G carelessly slipped and fell down at home. She knocked her head (back part) but it was very mild, she never cried and pulled herself up on her own.
About 9.30am, nanny called when I was in the office. She told me from the time Bb-G reached her place until 9.30am, she walked in a very imbalance way, tripped down many times too. Nanny and her husband was very worried as this never happened before. Asked me to bring her for a doctor's checkup since she knocked her head beforehand.
This call from nanny made me panicked and worried. I hurriedly drove back to her house and picked Bb-G to the clinic. While waiting for our turn, Bb-G behaved normally, she was so active. Walked around the clinic - barefooted. (too emergency, didn’t wear shoes)
Then when the doctor was examining Bb-G, she could even grab the doctor’s mouse and put by her ears, just like talking on the phone. This made the doctor and me laughed. Doc even pulledl out the mouse wire from the USB port and let BG-G had the whole mouse to play with. Doc said she was very normal. A good news. However doc could feel there was a small swollen part on her head, hence prescribed painkiller + anti-swelling syrup. I have to observe her for 24 hours in case she behaved abnormally like – vomit out of a sudden, no appetite, cry for no reason. Thanks god, nothing happened …..