Overheating...., Diagnose my problem? Options

[95GTCelica]

Alright 6GC People I need your help...

Today after driving for about fifteen/twenty minutes I parked and noticed that the temp gauge read above the red line and the H. Popped the hood and heard gurgeling coming from the radiator with some overflow. I let it cool down for an hour then came back and drove around the block a couple times. I noticed that the temperature goes through the roof when it starts and slowly climbs. But when i hit about 40mph it cools down to about 3/4 of the way and when i stop it goes straight back up. I had a similar problem like this before and it was a bad water pump which was replaced a few weeks ago. Today there was no coolant on the ground just the few drops that spilled from the overflow. The engine seemed to be running fine and I wouldnt have noticed anything wrong with it unless i looked at the temp gauge. So can anyone help me? Any ideas? I'm stumped.

[95GTCelica]

head gasket can be an issue too? if u went past the red u have warped the head and need to replace the gasket and machine the head again. i'm surprised u didn't kill it

Well I only drove it around the block once and figured that it might not do any harm. I didnt think it would get so hot so fast. But in hindsight it wasn't the greatest idea. Thanks I'll look into that too. Right now I am going to replace the thermostat and look to see if there is any deris in the cooling fins while it's cool out. Hope it works. Thanks