I'm back. Problem almost solved.
Got car back last night. Drove it to work this morning. Got out of work and found puddle of anti-freeze under the car (not large puddle but enough to concern me) Also, low coolant light on.
After adding coolant, took car back to mechanic. Water pump is leaking (maybe defective). He states that he has seen this before and that sometimes it takes a while for the seals to seat.?.
Has anyone ever heard this before?
Mechanic says to keep an eye on it and if low coolant light comes back on to bring back for another water pump replacement (at his expense of course).
Thanks for all of your advise -- It is much appreciated!