Don't I've any other choice?
What you can do now is
1.Do not get into a confrontational mode, please meet your favorite lecturer/assistant professor and ask for guidance and offer to repeat the assessment. Then meet the head of the department to plead your case sincerely. If there was a genuine reason of sickness, personal problems, stress etc, some faculty members agree if the student is a good performer and this poor performance was just an one-off episode.
2. If you are not successful, then fix an appointment with the principal and humbly request him to look into your evaluation and help you out with the internal assessment of yours that you feel was unfair. The principal as per regulations of MCA has the right to grant special permission for a candidate to repeat the assessment if there has been an obvious error in the evaluation of the previous tests.
3.You have an option to appeal against the results of the internal examinations. The college has a fee of Rs 350.00. An appeals committee decides on this and then the give its opinion. If your performance deserves better marks than what was actually given, then your marks would improve.
4. If the new results are not in your favor and you strongly believe that you have done well, you can approach the 'Department of Student Grievance'. This department takes students grievances against the continuous assessment form of internal assessment and the principal decides on these issues.
So, my advise you be to make points of how your performance was, speak to students and seniors who have been in similar situation. At times like these, the administrative staff of the department would know the practical reasons and ways around the internal assessment, try and speak informally to a senior person in the admin department concerned with your course and subject.
Meet the department head and principal with your mother, father or guardian would plead your case better. Whatever you do, please do not antagonize your professors or the principal by raising your voice or being adamant, the entire exercise may prove to be counterproductive.