please help! :( 98 altima

Ok a few weeks ago my car started leaking water and it over heated. found out it was the water pump so we changed it. we also changed the thermostat and the radiator is only about 4 months old.
Sat. my car started building up a lot of pressure and it busted the top radiator hose, we changed it and the radiator cap.
My cars still leaking water somewhere. I have no clue where and it leaks after about 7 miles of driving. Everything in my cooling system is practically brand new.
So any insight on what this could possibly be would be great. Im down to my last nerve and about ready to take a baseball bat to it.

Are you saying it leaks out completely after 7 miles of driving and you can't see where its leaking from?

Get a loaner tool from Autozone and pressurize the cooling system. You will
immediately find out where is the leak. I find out yesterday in just 10 seconds.

Sounds like a blown head gasket..or..worse. Many times in an overheating situation not only will the head gasket give-way...but...a head or even block will crack. The reason that the radiator hose is pressurizing ....is because the compression from the cylinder/cylinders is leaking into the coolant system via the blown head gasket....or at least that's what it sounds like to me. I hope, for your sake, that I am wrong.

I would pressurize the system like the other guy said, but in my 99, it was the heater core. It leaked under the dash and dripped out one of the panel gaps near the firewall.