What makes a 2003 Pontiac grand am to overheat if it's not leaking fluid

What is your question?

The car started to knock and their is no coolant in the oil either. I make sure the coolant is full before I begin to drive it and after like 30 minutes the light for low coolant comes on and the temperature starts to go past the 200 point. I don't see any where on the motor where I can see it's leaking from if you have any questions please feel free to ask me cause I will greatly appreciate it thanks

What makes this problem better or worse?

The light for low coolant comes on after driving around for like 30 minutes and when I fill it up it takes a whole bottle of antifreeze to fill it up again

How long has your 2003 Pontiac Grand Am had this problem?

After couple of days I parked it