If you took a formal Calc-3 course (Multivariable calculus), differential equations and linear algebra, P-chem 1 is essentially taught as a math course, i.e., mixture of the aforementioned courses with applications to General Chemistry. Is the pre-requisite to P-chem 1 in your school Gen Chem 1/2, and Calculus 2? While those are "enough," those extra math courses will really go a long way in doing well in the advanced chemistry courses such as physical and upper-level inorganic. I have observed that the major barrier for students doing well in P-chem is learning all those maths in a constrained period of one semester. If you plan on taking P-chem 2, i.e. Quantum/Spectroscopy, having taking a course in Abstract Algebra is very helpful. As an example, having a solid understanding in groups and symmetry will go a long way in understanding the quantum behavior of chemistry.
I guess your issue is the fear of getting a C+ in your class and hence having a negative impact on your medical school applications. If you are keeping up with the class average/median, most major Universities curve that to a B/B- range. Just looking at your work ethic (3.78 GPA in chemistry), I can wager some imaginary dollars that you'll be getting at least a B, and maybe a B+ or higher!
🙂 In fact, having a physical chemistry course graded on an absolute scale would be pretty batsh*t insane . . . there would be a ton of chemistry people jumping on the biology ship if that was the case lol. A 40/45 average was pretty typical on any physical chemistry exam - I found out those students got a B, 50-60 was a B+, and anything higher than a 60 was an A-/A/A+. These students in the latter category had a math minor or double math major.
The best of luck!