What are the signs of dehydration and what do you do?

I woke up this morning not feeling so good and I wondered if I could be dehydrated? I am just not sure of the signs of this or what to do about it and at what point do you call a doc? I am feeling light headed and sick to my stomach but haven't vomitted yet, but feel like it. I know that I am not getting in the amount of liquids I should, but I am trying!! 

The signs that I had were headache, light headed, weak, dizzy, and I could tell by the color of my urine. If you don't feel better later today I would call in. Also perhaps you could pick up some smar****er which has electrolytes in it. Similar to Gatorade which could help if you are dehydrated.
Hope you feel better!!

If your urine is really dark, darker than usual, I would suggest you call the nurse and she may possibly send you to urgent care to get some water on thru and IV. It is the fastest way to catch up on water. I had to do it 3 or 4 times. No biggy, won't take very long to do.

Hope you feel better soon,

Karen