breeding guppies

I currently have female and male guppies in my fish tank, they've all been together in the same tank for about 4 days. When exactly do they start breeding? Do most start at a week after first being put together or days after? If days after, how can you tell if your female(s) are pregnant? I read...

Hey everyone, I'm a full time college student with an 8 gal Fluval edge tank with some Amazon Sword plants, a breeder pair of fancy guppies (2 female 1 male) and a golden snail. So far, both of my females have given birth once, and I have saved 6 fry in a separate, small bowl to raise until they...