If a girl guinea pig was in cage with bunch of boy pigs is it pregnant?

It's impossible to know for sure if a female guinea pig is pregnant just because she's housed with males. Here's why:

* Guinea pigs can get pregnant very quickly: Female guinea pigs can become pregnant within a few hours of mating.

* You can't always see signs of pregnancy: Early pregnancy signs in guinea pigs are subtle and often go unnoticed.

* Gestation is short: Guinea pig pregnancies last around 63 days. A female could become pregnant, give birth, and you wouldn't realize she was ever pregnant.

How to tell if a guinea pig is pregnant:

* Take her to the vet: A veterinarian can perform a physical exam and possibly an ultrasound to confirm pregnancy.

* Look for signs of pregnancy: As pregnancy progresses, you might notice signs like weight gain, swollen nipples, and a larger abdomen. However, these signs are not always present.

Important Note:

If you don't want your female guinea pig to get pregnant, it's important to separate her from males. You can either house them in separate cages or use a divider to separate them within the same cage.