How can I tell if I have a minor concussion?

How can you tell if you have a concussion ?

• I was at work today and I went to put a vase on a glass shelf, when I put it on the shelf it broke the glass and I got smacked in the head by 3 vases. I sat down on the floor trying to just relax and I realized I had two huge bumps on my head. I put an ice pack on it for a little while and went back to work for another 3 hours. After a little while, I started getting a little dizzy and my vision was a little blurry. I'm at home now and my neck is killing me and I'm just light headed. I don't want to sleep without knowing if I can sleep.

• Answer:

  If the dizziness or vision gets worse, you get nauseous or throw up, or you or someone else notices that your pupils are different sizes or react to light with different speeds (both light and dark) go to the ER. Also if you notice a numbness or tingling on one side or the other. If you see double as well. If you are really worried have a friend check on you in the am. If you answer the phone great, if not they can come over. Just a thought.