Doctors!!!

Hello everyone, I am passed by first year of college & I have to say that it's been pretty great. However I am having huge doubts about my career choice as a nurse. While I do understand it is a rewarding job , I feel like I can do more. Nursing has been what I've shed blood & tears for since day one. Recently however I've grown an interest for obstetrics/obgyn. I am not on here to have people feel bad for me or that sort of thing. I just have doubts about medical school. I believe in myself but I do understand we all weren't made to be doctors. With medicine it's either a hit or miss.. If you are a doctor please share your experiences with me. Medical school scares me. Studying for so many years isn't the big issue. It's the fact of , will I have what it takes.. No rude comments please. Just a young adult trying to find some reference. Thanks!