sick chameleon

[Leona]

I have a year old pregnant vieled, for the last few weeks I've noticed she has a swollen neck and goes to the corner of her cage and digs(her front claws are trying to dig an imaginary hole????) if I take her and put her on a branch she is fine, but she always seems to find a corner. She is eating, drinking and deficating normally. I was supplementing her with vitamins and calcium but, I have stopped, she has a Powersun light on her cage. If anyone could give me a web page , a link, or has any ideas of what she is suffering from I would greatly apprieciate the info. I have done some research but I'm at my wits end. Thanks Leona