Is my guppy pregnant ?

[uelissa]

I have been breeding guppies for a while… I just never had a blondie before. I got a few Blondies yesterday, and put them in a separate tank with my male snakeskin. I know for sure she wasn't pregnant when I got her, because she was in a separate tank away from males, and wasn't plump at all. Now her and my male snakeskin always hang around each other, and she looks more plump. Do I have a prego ? (Sorry for the bad quality pictures)

 

[tomtom14]

Normally you can see a black dot just behind her stomach/ big lump. I can't see that it might be because it's only just happened leave it a day or 2 and if you can see the black spot I would get ready for some fry