Having a breakdown...

I've had 4x2500 word essays due in every week since the 17th April - my last one is due this Sunday. I cannot focus on it at all though. I've been working on my assignments every day for the last 3 1/2 weeks and I haven't really left the house...I can't do it anymore! I've got to the point where I have all my references and my plan together but I just can't start it no matter how hard I try. I really need a break. I don't know if I should apply for extenuating circumstances or just try my hardest to blast through it - at this rate I'd probably be better off doing it in an all nighter as opposed to mulling over it for a few days.

Any suggestions?