1. I have a strong GPA, but throughout undergrad, I had some difficult semesters due to health/personal circumstances and opted to take some elective classes for a P/NP grading system in order to focus on my premed/science classes. For example, some semesters, I took 13-16 credits, but only opted to take 8 of them for a letter grade. How concerning is this? This happened 2/8 semesters. I still took a full courseload each semester, just not all of those credits were for a letter grade.