Is my Mollie pregnant?

[Placroix29]

I'm kind of new to raising mollies I have two female's and one male when I bought them all I wasn't sure how to tell thier sex. However I do now.. They breed non stop but

I've had them a few moths and still no babies I'm not sure how long the cycle is? I'll post a few pictures of her! thanks for you input! Also is it possible she's too stressed out to have babies given the fact that there's an assortment in the tank?

 

[Placroix29]

Also this is her a couple months ago when I first got her.. They are now in a much bigger 30gal tank bc I expected her to have babies and was gonna raise the fry in the smaller one cycled tank? But she won't seem to have any?