Yes! It may take a while. But guinea pigs can double their weight when pregnant, depending on how many they have. They sort of have the appearance of a lightbulb...their back half get's VERY wide and big. Make sure that you separate the female from the male before she gives birth. Otherwise, she can get pregnant again within hours, which is very hard on a guinea pig's health.
No the guinea pig will no get pregnant.
Only the guinea pig she mated with but be sure to separate them after birth
When I got my guinea pig, we didn't know she was pregnant, so about a month later, my sister got one that wasn't pregnant. It was a little less that a month after that that my guinea pig had 2 babies. During that time, though, Molly, the pregnant guinea pig, was acting very territorial, and Milly, the non pregnant guinea pig, was staying by herself and not having anything to do with Molly. So make sure that if you put a pregnant guinea pig with a non pregnant guinea pig, that the non pregnant guinea pig is a girl, or else there WILL be trouble.
A guinea pig can only get pregnant if a male guinea pig has humped it. A guinea pig may have fallen pregnant while it was in the pet shop or where ever you got it. Now if you think she is pregnant it is important to research breeding guinea pigs.
No, only girls get pregnant :)
No, not posible.
The guinea pig will be heavier than usual.
No. But you would notice infections in a guinea pig that it can't pass on. that's why you have to choose your guinea pig carefully.
Yes and fast
Yes, a veterinarian can perform an ultrasound or X-ray to confirm if a female guinea pig is pregnant. It is not possible to accurately diagnose pregnancy in guinea pigs through physical examination alone.
NO.
The same thing as if it was not pregnant!