If it was a boy guinea pig - yes.
If your guinea pig lives with a male then she could of course become pregnant at any time. How is she 3 years old without being pregnant before? If she is, she will get very bulky indeed in a few weeks time. There is no other way of knowing.
Trust me...It's not...
No, she is already pregnant.
I had three period when I was pregnant with my first so it is possible but very rare! :-)
My guinea pig was pregnant toI recently bought my guinea pig from pets mart. I had my guinea pig for 1 week and then one night i went in to say good night and there were three baby's in there with her. Unfortunately for me they were dead. It was unexpected and a total and complete shock. She was only 3 months old!!! LUCKILY though my guinea pig is happy and health to this day. I just tried to push the past out of my mind. If you think your guinea pig is pregnant take her to a vet. And handle her with care, and if possible don't handle her as much if she is pregnant. ALSO don't get your hopes up if she is young and pregnant the chances the babies will live to be healthy and the mom is very not likely but miracles happen hope things turn out for the best, a.m.l they may have been pregnant or housed with a male before you bought it. No, not at one week, but they can become pregnant at three weeks old. Mine had that problem she is 12 weeks and is going to give birth any day now ^ they say a guinea pig can get pregnant at 4 weeks old....we also have a guinie pig who we got already pregnant....when a guinia pig has babys u need to split the boys from the girls at 4 weeks as brothers can get there sister or mother pregnant at this age ...they r then pregnant for about 9 / 10 weeks .... and babys will be born with fur and eyes open
Yes.
I have three
She hasn't been pregnant for 3 months - gestation is 64 days. (She will also come into oestrus within a few hours of giving birth)
Guinea Pig mothers will be pregnant for up to three month. It can take shorter time, such as two months. Normally it is two to three months so the pups can fully form until birth.
A female guinea pig gets a cycle every 17-25 days, for one day. On that day if she is with conntact with a male guinea pig it is almost certain she will get pregnate. So be aware that if you house oppiset genders together THEY WILL HAVE BABIES, which can be amazing but also hard to sell. When having what some may call sex the female guinea pig will have its bottum tilted slightly upwared. I the male is "sniffing" her bottum, EXPECT BABIES. My boy guinea pig got my friends guinea pig pregnate and were expecting babies in November hope this was helpful!
Anytime you have sex, period or no, you can get pregnant.
Yes. it is possible. A woman can have a few periods or even regular monthly periods during pregnancy.