You don’t need a particular major to go to med school – just fulfill some prerequisite courses and that’s it. There is no requirement to have a “pre-med” degree to get accepted to med school. What you will need is a high GPA in whatever you major in, and strong test scores. Look up some medical schools that you are interested in, and go to the admissions section to find out what they look for. That is what you need to accomplish as an undergrad. I don’t know why you couldn’t do that at St. John’s.
The PA program should prepare you just fine for med school, and it would give you the option of getting a good-paying job if you decided four years from now that you are not up to many more years of college right away. If you have a straight science degree or humanities degree or “pre-med” degree, that won’t get you a decent-paying job without a graduate degree.
Listen to your parents who are paying for your education. If you don’t want to be in the PA major because you think you won’t make top grades, then reconsider your plans to become a doctor and think of something else. If you think it would prevent you from becoming a doctor to have that major, then you are mistaken.
You’ve made other posts on here about being confused as to what to major in, and how you aren’t really sure about medicine. Go to the career center and take some career interest and aptitude tests to help figure this out. Discuss the results with your parents.