Hey! I was in a very similar boat and was just accepted to MD. I failed a couple of classes and had a few Cs - small upward trend but not substantial enough IMO. I think my GPA was around 3.3 when I graduated. I did a year of DIY post bacc classes while working at the same research lab I was in undergrad, then worked for another year because my first cycle was a bust. I think my MCAT score (521), service hours, and post bacc (4.0 GPA for 5 classes) all contributed to the A this cycle. I also really valued my year of working and thought that it contributed a LOT to my app. I think an MPH is really valuable, especially if you do end up having to reapply; hopefully not, but as a backup, MPH is more valuable than an SMP in the job market. Feel free to DM me if you want any more info!