"For I know the plans I have for you, declares the Lord, plans for welfare and not for evil, to give you future and hope." ~ Jeremiah 29:11
I know that there are so many things that run in your mind right now and what occupies a large part of it is your application to Medical School. You may not have passed the schools you wanted for yourself, it won't make you less as someone to your parent's eyes and even to The One Above.
You have to be strong for yourself and for everyone else who believes in you. Remember this quote as the days go by because He has greater plans for your. What ever you are encountering now isn't the one you've been praying for, never ever think of giving up. Always put in your mind and in your heart that great things in life come in a hard way. You have to strive hard and conquer every trials you'll meet alone the way in order to taste the sweetness of your victory.
Just do the best you have to do because you know that God is always there and He will never ever forsake You no matter what. You aspire to be a doctor and be an inspiration to all. Do not let the evil pull you down with all the depression and dismay you feel because you were rejected in other schools. Fight it back and let the evil know that no one can ever bring you down. You may experience the hardest spiritual battle of a human being can have but don't ever think about giving up because on the first place, God never gave up on you.
If you feel that you are worthless and a disappointment in the family, just think that there are other people who are experiencing worst than your pain. Never forget to pray for it is the bridge to the hands of God and a tunnel to His heart. You won't go wrong if you follow His light. Convince your self that you are going to make it.