Hi!!
Your girl looks great. Mine has the bulging also. Pretty normal for larger turts. The bulging is just fat. Not eggs. When the turt is gravid, u cannot see the eggs. Only feel, and or know because of the actions of your turt. My girl is CRAZY when gravid!!! Lol
If she isnt showing ANY signs, i wouldnt be worried at all.
And rarely any turt lets you just feel for eggs. The only way to do it is pretty much get them out walking, get behind them and when their legs are extended, push a finger gently into the fatty part in front of the rear leg, then move it around. Its usually pretty deep, but if shes gravid you can normally feel hardness in there.
But if she wont let you feel. Just watch her behaviour. She'll probably "tell ya"

Good luck!!