Help with a guppy please Pregnant or ill?

[Rosko420]

Hi I’m new to all of this I started off with guppies as heard they were easy to look after… but I’ve noticed 1 of them have gotten a lot bigger since I bought it. It’s a female it was named XL guppy on the tank in the store. But it’s definitely got bigger on the bottom half of its body. Is it ill/dying or could it be pregnant? I will attach a video if it lets me thanks.

 

[emeraldking]

She does look pregnant but still some time to go...

 

[Rosko420]

Thank you, how will I know when to separate into a breeding box? Thanks.

 

[AgeusBMXFishguy]

I would wait until she gives birth in the tank, then move the fry to a breeder box. This takes a lot of stress off of the mother. You can feed the fry finely crushed fish food, or if you feed them brine shrimp, they grow fast. You could also try feeding her a boiled pea, in case it is constipation. Just be sure to take the skin off.
Hope this helps!
just out of curiosity, does it seem ill? how long ago did you start the tank? is it heated, filtered and aerated? what are your water parameters? has she shown any other symptoms?