Like at a place that sells plants ? Or where
do these people above not realise that bearded dragons are lizards? ...not dragons. sigh for the size of the eggs - as the reptile embryos grow, the egg swells too so that is completely normal. The older the egg, (as long as its alive and healthy) the bigger it will be and for the vermiculite... if you have a syringe or something like that then you can 'inject' water into the vermiculite without getting it on the eggs. i dont know how you incubate your eggs, but i keep my eggs and vermiculite in an old waxworm tub (a small tub with slits/holes in the bottom), and i put that tub in a small bath of water (the box that crickets come in) - it works to keep the humidity up, as well as keeping the vermiculite damp. i used it for leopard geckos though, not bearded dragons so i dont know if that will help any good luck :)
i will take a gander at this pickle you dropped yourself in. I have few experiences relating to reptiliar pregnancies and births and copulation, but i will attempt to put the bone in the mouth if you will so to speak. try to take the urine from your toilet and pour 34ccs into a small test tube then proceed to add baking soda with a bag of doritos. Pour this substance on the eggs and presto your eggs will return to its original state. quite simple.
I just wanna joke. how to care for my bearded dragon eggs? Ans: Don't shave the beard cause it is used to give the right temperature for the eggs to hatch. ^_^