argus reed frog's.....Pregnant?

[stunrb]

I bought 4 argus reed frog's from the show on the 17th, 3 females and 1 male. I was actually told at the show that they were clown tree frogs but I did some research and I'm pretty sure they are Argus reed frogs. Anyways, My male frog was calling for a couple days and now he stopped. Does anyone know how they breed or have any experience......I see white spots inside one of the females bellies when she's on the glass, is it possible for them to be eggs?....any help would be appreciated.
I would also like tips on keeping them and breeding them, i only feed them pinheads and i dust them about twice a week, is this adequate?

Thanks,
Greg