Hi,

I dont think too many calories could be a problem, too few however can cause a stall because of starvation mood. (see my link about the documentary)
When you login to fitday, click on HOME and choose the option "make my journal public". The link you'll receive is the one you should post to us.
If I can see you fitday I should be able to help.
Check out my link about the weight roller-coaster - this is how this WOE works.
Good luck!
alina