I did not get any Fs or Ds, however, I did get at least once C every single semester expcept for one. A lot of my Cs are science classes, though...both orgos, gen chem I, and physics III (engineering physics is 3 levels bc engineering is the worst major ever).
Were you a pharm tech at Walgreens? That's what I did at CVS and I was able to really touch on that in my personal statement. I talked about how the patient/customer interactions at the pharmacy made me realize how much more rewarding making a difference on a more personal level can be...instead of working in a lab doing research for a pharma (my original career intent, hence my biomedical engineering undergrad major).
I feel like, for DO schools especially (and this is entirely my opinion)...they tend to give a little more weight to the non-numerical details: sincerity and uniqueness of your personal statement, LORs, EC's/well-roundedness, demonstration of your dedication and desire to become a DO and work in that school's surrounding community, etc. How does that stuff look for you?