I was heading home yesterday and all of a sudden i had the water Light turn on and suddenly my car started to heat up, so i stopped and checked and it was the water cap that was kinda lose, so i put a little bit of water in it and closed it and didn't think much of it, but i moved it later on the night and it started to do the same thing, only different that it did not throw any water, i don't know what it could be, if anybody can help i would very appreciate it thanks......

 

Thermostat or water pump?
Water not circulating my guess with info provided.