Should I enroll in a Master's Program?

I’m currently a second degree bachelor student taking prerequisites. This would be my second time taking most of my prerequisites due to being out of school for over 10 years. My first degree is a non science degree. I didn’t do good in a couple of my prerequisites. My overall cumulative GPA was a 2.6 for my first degree. My science GPA is much lower. 12 years later I’m back in school and now I’m making straight A’s. I recently dropped a Calculus class due to most medical schools not needing it. I’m paying for school so I’m determined to take the classes I need so I don’t waste my time or money. My Academic Advisor wants me to apply for medical school next year. However my advisor that is over career services wants me to do a 1 year Master’s Program, any advice, thanks