I would generally agree with the other posters; I normally wouldn't recommend retaking OChem II with that grade. However, I remember from the "How many time did it take" thread that you have a 2.4ish PharmCAS GPA. You're going to need to bring that up somehow to at least a 2.5, if you still have several prereqs to take, I say don't retake OChem and do really well on what you have left. If you've already taken most of your prereqs, it might be prudent to start looking into retaking some. You definitely need to kill the PCAT in chemistry though.
Best of luck!