I've got a 91 Accord EX...a couple of weeks ago, I had to get a radiator hose and heater hose replaced due to leaking antifreeze. Everything was fine from then on. However, yesterday, when I got off work I noticed that there was a large puddle under the car..antifreeze, so I bought some to refill, but it wouldn't take anymore...(clog?). So I drove home..again, when i stopped, it was leaking again. I opened the hood, and the antifreeze was EVERYWHERE...What do you guys think it is?
The car didn't overheat, and about...3-4 months ago, I just replaced the thermostat and had the radiator flushed...Any help would be appreciated...

VERY likely a leak from the rad header. They are notorious fior cracking and doing exactly what you describe.

Get a rad shop to pressure-test it.