As a parent, I can guess that your parents are crossing their fingers and hoping things will work out, but the fact that you’re crying every day obviousy is not a good sign. Has your advisor offered any guidance or help? If not, is there any other faculty there you can turn to? The good news is that three weeks is not a very long period of time in the grand scheme of things. I’m sure it will be very tough, but just keep focusing on studying hard and doing well. I’m sure this will sound silly, but also try to make a real effort to not care what the negative people are saying or doing – you may be able to condition yourself over the next several days to pay less and less attention to them. Wishing you the very best of luck. You’ve come this far, so you can do it.