You will likely need to stay in the hospital if: Emergency or more severe symptoms of head injury are present; Skull fracture; There is any bleeding under your skull or in the brain. Outlook (Prognosis). Healing or recovering from a concussion takes time. ...
Scientists concluded that the average human body contains approximately 37.2 trillion cells! Of course, your body will have more or fewer cells than that total, depending upon how your size compares to the average human being, but that's a good starting point for estimating the number of cells in your own body.
Wikipedia says 10 13 : Bacterial cells are much smaller than human cells, and there are at least ten times as many bacteria as human cells in the body (approximately 10 14 versus 10 13). The Nobel site says 10 14 : An adult human being has approximately 100 000 billion cells, all originating from a single cell, the fertilized egg cell.