Hello Physics forum! I've been lurking around on here for the past few months and finally mustered up the courage to ask this question to you all. To the mods, I apologize if this is in the wrong section! Some background: I recently graduated with a degree in Psychology due to the fact that I was Pre-Med. However, having taken the MCAT recently, I've begun to doubt my passion to do Medicine. To be honest, I've been pressured into it as my elder siblings are all in Medical School/Doctors. My true passion lies with Physics, and after having a bad experience with it in undergrad (my General Physics professor was TERRIBLE), I decided to teach myself physics using Physics by Giancoli. I literally read the first 700 pages of that book and did almost every practice problem and loved every second of it. However, this occurred during my final year of undergrad, making it especially difficult to change my major and do something else. As of today, I am still applying to medical schools but I am hesitant on moving forward. Even if I get accepted I REALLY want to get a physics degree. So, my question is, how do I move forward? Is it possible for me to apply to an upper tier school for undergrad to major in physics? As of right now, a masters and PhD are out of the question because I am lacking an undergraduate degree in Physics. Therefore, what should I do? To end off, I have great work ethic. I've taken upper level Bio classes (graduate level) and have aced all. To state it simply, my cumulative GPA in undergrad was a 4.0 out of 4.0. Pre-Med prerequisites usually include Gen Chem, Gen Physics, Organic Chem, and Gen Bio, so I have a pretty strong foundation when it comes to the chemistry aspect of Physics. I've always loved theoretical physics and have read several of Brian Greene's books about String Theory and Parallel Universes. So, I'm not just some guy who likes physics for a semester and moves on, I truly believe it is my calling.