Please post a pic. How does the gray portion of the tail feel? Is it flexible and responsive to touch or does it feel hard? Has the beardie suffered an injury to the tail? There is a condition called necrosis in which an injury can invade healthy tissue and cause tissue destruction. I once had to take a beardie named pancake to the vet for an amputation into healthy tissue to stop the spread. I am not saying this is what it is, but additional information and a picture is important. :|
It kind of looks like the tail's just going to shed from the picture... However, the weak back legs and that lump at the top of the tail say MBD to me... What kind of UVB light do you have on her? Are you supplementing with calcium? I think you need to get her to a vet. How old is she? At only 10" she's either very young or very malnourished, so I sincerly doubt she's gravid unless you've been keeping her with post-pubesent males. Or is it just her tail that's 10"?
How much water should I be giving my bearded dragon? He will only drink from a dropper when I drop on his nose and I’m not sure if I should give it to him until he won’t drink anymore? Or should I stop after he’s had a certain amount?
Just want to check that if my beardie is ok I managed to get a video of him yawning today and screenshot him with his mouth open does he have mouth rot??? He is eating and drinking normally btw, the discoloration on his left of the mouth has been there for a month but the discoloration on his right side is new