These forums are meant to be helpful to new people. I think everyone here was new to the forums at some point, and there is no need to make people feel bad about changing their decision, when you know nothing about the factors motivating that change.
Anyways, Pharmacy school, from what I can tell so far, is a lot of chemistry. A lot. So it helps to like that, most definetly! You get a lot of hands on experience, as your last year is primarily clerkships, and possibly you get earlier exposure than that. There are tons of opportunitites in pharmacy... you can do clinical specialties, industry, clinical trials, retail, ambulatory, etc. There are many opportunities to figure out what aspect is right for you when you do your clerkships.
I think some of the main differences between pharmacy and medical school is that you have less anatomy/physiology in pharmacy, and a lot more physical pharmaceutics and medicinal biochemistry. Beyond that, I dont really know.
Be aware that pharmacy school admissions is extremely competitive. There are tons of good schools, but all the programs are slightly different so it is best for you to do a lot of research to find out what program works for you. Best of luck with your decision. If you have any specific questions, ask! Its the only way to find out. There are many people here who would be happy to give specific info about there schools.