How damaging is a potential W in postbacc?

Hi, Concisely: 43 quarter units into a DIY postbacc with a 4.0. Gen Chem Down, Bio in the works. Calc I not going well due to a variety of reasons. Have righted the ship, but in a hole - almost positive I could get an A if I had proper bearings/resources to begin quarter with. Professor not helpful at all. When evaluating outcomes, B > W > C I imagine? Or is a W preferential to a B if I think I could get an A next attempt? I need to see how the next 10 days goes but I just wanted some... How damaging is a potential W in postbacc?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums