[@XxLyraxX]

Questions are good sweetie *hug*

In the days leading up to transition your eyes become sensitive to light and you feel hotter than usual. You are also hungry more but can't eat. Your teeth hurt as well, like a toothache. 

Once your transition begins, which is very sudden, intense pain racks your whole body. You nearly burn up with fever but do not sweat. Feeding helps with the pain and gives you the nourishment you need as you change. The pain lasts anywhere from a few hours to a day or two. At the end you are tired and sleep for a while. Once you awaken you are energized.

Also vampires get burned in the sun and if exposed too long, burn to death.
Holy Water, Crosses, Garlic? All of that does nothing. Completely useless.