I am stressed!!!!!!!!

I am stressed out today !!!!!!!!
Because I enrolled late this year , I have fallen really behind . There are ONLY two week till the end of the term from today and I havnt even  completed half the terms work !!!!!!
The thing is I have time to complete my work but most of the work is REALLY HARD !!!!! Sometimes I just sit at my desk staring at a question for more than 20 minutes , the sad thing is in these 20 minutes I havnt even got a solution for my question !!!!!!!!!!!!

I dont know what I plan to do and how I plan to catch up......Things are all muddled up in my head .I dont know what to do !!!!!!!!!!!!!!!!