Ellie-
I am near the end of my second year of medical school and my perspective has changed DRAMATICALLY from even last year as a first year student. Because you are recieving advice from mostly premeds and first years, I thought it prudent to give a perspective from someone near the end of their "book work" and ready to enter the clinical years. Let me first tell you that second year is unlike any thing you will ever experience. I was a happy first year getting A's in most of my courses because most first year courses are simply repeats of undergrad classes, just a little more complicated. But second year is a completely different story. My grades dropped dramatically until I found out that I had to study an incredible amount of time in order to maintain my grades, pass classes/ do well. Why am I telling you this? Because everyone on this tread is cheerleading you into something they have little experience with. If you think your premed classes are difficult or taxing, wait until you take Pathology, Pharmacology, Microbiology... in the same semester! I did well in undergrad. I attended a very respected university, had a 3.5 science and a 28 MCAT. But medical school has been the most difficult experience of my life, and I have a new found appreciation for why ADCOMs demand academic strength as part of admission. Everyone on the premed board seems to be infatuated with 'getting in' to medical school and very few think of what it actually means once your 'in'. Life gets hard, I see my wife and kids very little. They don't allow you to just put school on hold if your family needs you.
I guess what I am trying to suggest is that you worry less about if you are good enough, and more about if you are ready physically, emotionally, etc. to take on medical school. I have asked myself numerous times why I did this to myself. I have been tried to my emotional core. It has not been easy and the only thing that has got me through is my love of medicine. If I weren't stable, I would have dropped long ago, and you will see classmates drop out because they cant handle it either. Now theyr'e out of medical school with $30K of medical school debt, and they wont even be a doctor in the end so they can afford to pay it off. The bottom line is: What good is it to obtain a goal that you dont want in the first place, just in the name of obtaining it. Get my point? Life isn't about proving your smart enough for medicine or telling people you got in to medical school. Its about happiness, family, etc.
Please dont take offence to this post. It is not my intention to disuade you from a dream. But coming on a premed forum for advice will give you an extremely limited, almost dangerous view of medical school. After going through everything I have gone through, It has tried my determination to becomed a physician to the point that I would think long and hard about entering medical school again (and I haven't even paid my first malpractice payment yet). If your family is ready for sacrifices and you are ready to work harder than you have EVER worked in your life because this is what you want, then you will get into medical school and do well. I have classmates with 6 kids, some have part-time jobs, etc. I dont know how they do it, but they do it. It can be done and you can do it.
Good luck Ellie. I wish you the best.