Should I go into medical school?... FIRST..read this.

FIRST!!! (and at the very least)
Shadow a real doctor in his practice. Now let me explain what I mean by shadow. I don't mean follow him around for a couple hours a week. I especially don't mean that. It is especially and only valuable if you do the following :

1. Ask questions. These should include... are you satisfied with your job? Is this the specialty you wanted to end up in? If you could do it again, would you? 
2. Of course ask the cookie cutter questions: what do you like best? what do you least like about medicine? What do you like about your specialty over others?
3. FOLLOW ACTIVELY. this basically means yes follow the doctor around, BUT the whole time your mind should be trying to sit in the drivers seat, in the role of the clinician. Why does he ask these questions? Why does he do this or that first? Why Why Why? And then at the end of a SHIFT, yes i actually recommend you stay for an entire shift... physical fatigue is a huge part of medicine... and paper work... then at the end, ask yourself can I do this every day of the week? or atleast as often as the MD works. (remember an attending has less hours than a resident)
4. Finally, ask what the doc does in his spare time for fun. HAHA you should get a laugh and maybe an answer to this. 

Secondly.... 

READ THIS ARTICLE. I wish I had. It is painfully honest. Not only the article, but the other articles mentioned, as well as the responses are carefully and tastefully chosen for a clear picture of the inner workings of what it is like to go into medicine. It touches on reasons you should NOT go to medical school. This is a time not only to consider medicine as a possible career and future for you, but also a time to re-prioritize your life. What do you hold most important? What are you willing to sacrafice? What are you willing to risk?

https://blogs.law.harvard.edu/abinazir/2005/05/23/why-you-should-not-go-to-medical-school-a-gleefully-biased-rant/

Finally.... Good Luck.