i would'nt really like to say mate, because im not a liazrd specialist but i think it may just be some of the membraine from the egg ... hope this helps anth
Take a breath and relax,
they will try to assorb the egg sack and it kind of just disapears if that makes sence just leave the lil one to it and check back on it in a lil while about 30 mins or so and you should see that its gone.
Can take a few hours or a day, best thing is just leave it be in the hatch container for a while, It will be weak from hatching so needs time to recover anyway.