How Do You Tell if the Female is Gravid?

[crzy_kevo]

as far as i can tell its female and how much have you fed it
if not much then most likely gravid

[Jack Neary]

as far as i can tell its female and how much have you fed it
if not much then most likely gravid

Thanks!
She has eaten a small frog on Friday and also ate 2 minnows...