Dear Sir/Ma'm, if you want to pursue a course in fields like Engineering or Medical or any such stream, then you must know that class 12 board examinations don't hold much of a value. They just check whether you have a minimal cut off score which is around 40% in all your subjects and whether you have passed in English or not. So, don't get disheartened. There are many option in life. All the best to you for your future ahead.