At that size and that age is is pretty unlikely that she is gravid. Is it possible that she was wild caught and could have an internal parasite?? Where did you get her from?
Also, too many meal worms.. with there hard exoskeleton could have her backed up. Normally meal worms are offered from time to time as a treat because there so high in fat. But from what I know they are not supposed to be the primary source of food. Try soaking her in warm water for awhile (make sure to keep an eye on her while you do it). This has always worked for me when my snakes or large lizards get constipated. GOOD LUCK!! Im sure the great people on these forums will help out as well.
