Tbh I really liked what I learn in pharmacy school. The curriculum is such so that you learn pathophys which is from a medical/sometimes pharmacist perspective (disease state, etc), the pharmacology (how the drug works in the body etc.), and the therapeutics (how you treat the patient which is key to what you are supposed to be doing as a pharmacist).
Understandably it's tough, there is tons of cramming so it's almost like reading a Harry Potter book on release day and then forgetting it by the time the movie comes out. Kind of a silly comparison, but as a fourth year student, I realize there is tons I forgot...so while on rotations (practical experience) I'm refreshing it all. It's tough, and rotations can be draining...I've done my retail one so far, so I gotta admit I didn't really feel this one-but I do like learning, looking up stuff about health in general, etc. so the researching part for me is really enjoyable.
Are you in high school? You should major in pharmaceutical sciences. I kno my school offers a BS in pharmaceutical sciences and I think that's a great undergrad degree for either pharmacy or medicine. You should also get a job as a tech ASAP. Working as a tech will expose u to what pharmacy is like and is great for pharmacy school b/c working experience means A LOT when in pschool-learned this the hard way. Try to shadow a doctor or get some volunteer hours in. See what you're feeling. A lot of what you learn in school, while it may be intellectually stimulating, is not necessarily reflective of reality. Get practical experience.
There are way more PharmDs who go to MDs than MDs who go to Pharmacy. I've heard of one person quitting med school and doing pharmacy. But I think PharmD-->MD route is more common-prob b/c people want a far more clinical aspect in their work. Also prob the fact that MDs are meant to be diagnostic experts in that they translate your symptoms into a disease state/problem and go from there so they have vast knowledge in anatomy/physiology and all that. Pharmacists are more like treatment experts, so they are supposed to have way more knowledge and say in what you can do to manage your disease state (both using medicine + non-therapy recs) as well as have knowledge about the drugs and how it affects the body. It's a bit more chemistry/biochemistry-like.
If u read the forum, just be aware pharmacy jobs are becoming a bit hard to find. You should be ready to move out of state, maybe in a rural area, to find a job. There are jobs in retail, hospital and clinical but it seems like most jobs are available in retail. However, if you are truly passionate and love what you are learning, don't let this discourage you. People are still able to find jobs in areas of their choice (from what I've witnessed), it's just not as easy as it once used to be.
MD jobs aren't facing a saturation like pharmacy jobs are (at least not to my knowledge) but their hours are long and haphazard and w/ changes to health care, they may be expected to see a lot more patients, which seems like it could be quite draining.
But don't take my word. Get the practical experience, hang around w/ both pharmacists and docs, and see wat u like. Good luck!