Head Gasket question

[steelcmg]

My car has been burning coolant/ water. I have flushed it out 2 times now and replaced the thermostat. But when ever i put water back into my car the radiator is turning the water bright orange. When I flush it out the water is clear so what is causing the engine to turn this orange right after the car is started.

Im also trying to figure out about how long i should be able to run my car before it kicks it. Replacing the head gasket it not an option. I am hoping to get thru the winter, but im kind of thinking that the cold may start to cause more problems.