First of all, axies do not get 'pregnant'. The term is 'gravid' meaning full of eggs.
Those pics are too blurry to tell TBH.
But is she definitley female? Is she over a year old? She could be carrying eggs but unless she has taken a spermatophore she won't lay. Most females carry some eggs most of the time, they produce more at certain times of year in response to food supply and daylight hours, and absorb them at other times.
Is she in with a male? Have you seen spermatophores?
Her shape will give you a clue - fat axies are barrel shaped, gravid axies are pear shaped.