I presume you've ordered an adult female, I might be wrong but all seems good with pic #1 & 2
I've raised my P.trans from 2.instar and mated them at 8.instar, signs of gravid shows in the 4-5th month of pregnancy. It's best to check with Ken if any chance she's been mated before or a wild caught (as most WC adults are already gravid).
Do you have an adult male to further test if she's gravid?
Meanwhile, its good to shower her with the conditions suitable for a gravid mum.
Keep one side of the tank slightly hotter than the other (e.g. With infra red heat lamp), ensure good ventilation and availability of a hide and place a small capful of water at a corner of the tank. Fill it weekly.