Help - big energy dip!!

I'm going to my first LL weigh in tonight - but I've just spent the most awful day going between lying in bed o trying to get myself going by drinking coffee because I've hit a kind of wall - energy wise - I even got to the point where I ate the last 3 chocolate biscuits in the tin as I felt ssooooooooooo low and out of sorts - i know I'll be fine - after the meeting especially, but what's going on? Anyone else had this and should I confess tonight?

thanks GG x:cry:<a href="http://imageshack.us"><img src="http://img146.imageshack.us/img146/337/ninjaspy2lb.png" border="0" width="25" alt="Image Hosted by ImageShack.us" /></a>