Is it because u could not understand the lab process or  U didn't attend this event classes earlier and u don't know how to do it? Do u want to rectify it  or you are trying to escape from These? Think dear...... You always handle any situation with a better clarity like those and have a peaceful life.

Respected Madam, Stress regarding exams, assignments and getting it all done while keeping the lecturers happy is very very common among students of your age. However you have to learn to handle it properly if you want to become ready to face the stress that any adult female is going to face as she grows up. You have to remember that failure is not the end of the world. Infact as you will soon begin to realize, it will be hard to go through life without learning to handle failure. If not from exams, it might be failure in interviews, or failure as a wife or a mother, etc, etc. What I mean to say is that nobody goes through life with a 100% success rate That being said, I would advise you to communicate your feelings to your friends and family so that they can provide you with some emotional support. Make sure you have a timetable and you have provided enough time( atleast 7-8 hours) for sleep and for eating. Time management is crucial while preparing for exams and also when doing your studies. Now, most importantly, if you still feel that the you are having suicidal thoughts, please do communicate it to your friends, teachers, family or anyone whom you think might be able to get you the necessary help and take you to a psychiatrist who can evaluate you for any anxiety or depressive disorders and treat you accordingly