Hermann tortoise shell problem?

[PsychoticTortoise]

Hey
I have a Hermann's tortoise who is about a year old now. I am concerned due to seeing something on the bottom of her shell which seems to be getting bigger and I am not sure whether or not I should be concerned.
I am worried that something is wrong.
Do you know what this might be?
I have attached pictures showing the problem


When I got her/him - http://prntscr.com/n1lzxo
After started to show- http://prntscr.com/n1m0b4
Now - http://prntscr.com/n1m0l6
Now - http://prntscr.com/n1m0uk

Thank you in advance

 

[ayrgrn]

That's a bit odd..
I have a 8 month old hermanns and he has this on the bottom of his shell.

If you look closely you can see the shell dips in at the centre and there are small lines going into the centre. I don't know if this is normal but is it similar to your tort? Mine looks healthy and it isn't effecting him so I guess it's nothing. If it looks like this then your tort should be fine.

 

[Ben02]

That may be where the yolk sack used to be. If it is then it’s nothing to worry about