Bad Day, Very Bad day

I just recently completed a new cam, lifters, distributor, heads and timing chain in my car. I fired up the car the other day and everything seemed fine. Good oil pressure, no lifter noise, ran the engine for about 20 mins at or around 2500 RPM'S to break in the camshaft. I did have a small oil leak at the timing cover but I was able to seal it up without needing to tear it back down. Changed the oil/filter and drained the assembly lube out, ran the car about 10 miles the other day and it ran great, plenty of power, nice throttle response. Well this morning I have the day off so I decided to bring the car to the car wash to clean it up and get it ready to go cruising again. Drove to the car wash and cleaned the car up. started it up after cleaning it and oil pressure was 65 lbs on the gauge, started back home, went about 4 miles and looked at the gauge I had 0 lbs of oil pressure. I was able to pull off the main road and limp to a stop, engine was sounding like a sewing machine. shut it down, opened the hood and pulled the oil stick, oil in the lower end is still clean but when I open the oil cap on the valve covers I see white coagulated oil in the top end. Called a tow truck and just got it towed home. A bad day all around. I will pull the valve covers tomorrow and have a look see. I will also drain out the oil in the crankcase and look at it also. Wondering if the oil pump **** it's pants? I do not know. I will also pull the distributor and check the oil pump shaft and see if it is broke. I do not believe it would run if the oil shaft was broke???? I do not know......