@ellagy - Forgive me if I missed somewhere, but what, if any medication are you taking for your diabetes at the moment? Your profile page doesn't give any clues.
EDIT! I must apologise... For some reason I had in my head that you were taking 18u Lantus once daily, but that was obviously a different thread. Ignore me, I'm incompetent and thick
Are you also feeling sick and ill too? If so (and I don't want to scare you as it doesn't really appear very likely from what you've posted so far) then go to our main diabetes.co.uk site, and check for the signs of diabetic ketoacidosis here: http://www.diabetes.co.uk/diabetes-complications/diabetic-ketoacidosis.html; if in the unlikely event that they do apply then get yourself to A&E asap.