Alero Coolant Leak!

My 2000 Oldsmobile Alero 2.4l has a repeating coolant leak. I can't seem to locate it. Had the Waterpump and thermostat replaced and it ran fine for a few weeks. Now coolant is pouring out after driving once I park. Doesn't seem to leak while driving. Nothing I can see from the hoses looks remotely wet, and the leak comes from the passenger side right near the engine. PLEASE HELP! I don't know where else to check and I am still learning cars. I feel so clueless as what to do.

The cap is clean. The reservoir is clean. I am about to do a pressure test. I tried running it idle and revving it to get the car temp up. Couldn't force it to leak. Seems to be somewhat random and when it leaks a lot comes out. Maybe 2-4 trips with leaks to clear my coolant tank. Doesn't seem to leak unless it reaches Normal Operating Temperature. I will post shortly once I get some more details. All help is appreciated truly.

Before I get too far ahead I noticed a change. In the 10 minutes or so I was inside after shutting the car off and having no leak, I go back out and MASSIVE PUDDLE under my Oil Pan. Looks like its coming down the sides of it but I am not sure from where that might be. The big hose that goes under the engine looks completely dry. Hoses to the radiator are dry. No spill from overflow hose. Commencing pressure test to see if that yields any useful information

I can't afford another $1000 repair for a damn leak.