Whoa whoa, until you can check and visually verify dont be so sure you have a male and a female. They definitely can both be females still. Because, like chickens (if you will), a leopard gecko can make and lay eggs without a male around. they simply wont be fertile. You'll have to candle them once they are laid to be sure. and if they are fertile (yes that means youd have a male and female) then youll need an incubator.
Next, if she is gravid and shes not eating and not pooping, thats not good. As I keep saying: take her to the vet. If shes pregnant she needs to be eating to keep er strength up. And even when they dont eat for a few days, they still typically poop somewhat regularly. And a diet of waxworms will not make for healthy babies.
Lastly, if she wont eat and wont poop, and is just getting bigger, her eggs could be bound. Thats bad too.
So, while I hope she just gravid and everything will work out fine, I completely believe you should take her to the vet for a checkup, just in case theres anything else at play thats causing her the lack of diet and regular bowel movements.