last upper div, P/NP or Withdraw?

hey guys so I think my GPA is sufficient enough to apply this cycle. I signed up for physio this summer but bombed my first exam. def going to end up dropping my GPA (which is borderline already). I know I ****ed up lol but now I have to deal with a W or a P/NP. does it matter which one? how bad would this affect my overall app. I'm a non trad who crammed BCP in 2 years. never had a W, since undergrad 3-4 years ago (had like 2)
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums