Pregnant Guppy?

Okay so I bought 2 female guppies yesterday and was wondering if they were pregnant, and if so, a round about time until they drop? Sorry a few of the pictures are a bit blurry ...my camera doesnt like to focus all the time

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oh and i don't know if you can see it in the pictures, but they both have what i think to be pretty dark gravid spots...however, i have never bred guppies before so I'm kind of new to them.

the blue and yellow one is nowhere near to dropping. I can't tell with the yellow, as my glasses are smudgy.

yea i figured that the blue and yellow wasn't close...but the yellow one looks a little more progressed....ill add some better pics

oh and if this makes any difference, the yellow one keeps going right by the plant then hovering in one spot, fins and gills moving very rapidly. But then I go to look at her or another fish goes near her and she darts away, then her gills start going normally, then she goes near a plant or the filter and starts moving her fins and gills rapidly, hovering in the same spot...

here are some better pics if it makes any difference

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