This is basically all the advice you need. In my humble opinion, and I know you don't give a crap because I'm a lowly college grad who hasn't started medical school yet, you seem hell-bent on blaming everything but yourself. That won't get you anywhere in life. You don't deserve to graduate, much like you think you do, because you haven't passed a test central to graduating medical school. You failed multiple times, and the only person you can hold accountable for that is yourself - not life, not your sister's health problems, not the school, etc.
I wish you luck, because getting the boot after 4 years of hard work and debt isn't something anyone should have to face. Read what ShyRem said and take it to heart if you want a fighting chance, or continue on like you have been and likely not get anywhere.
