I have 2 pregnant guinea pig's (I pressume)!!!
1. It is pretty likely that the previous owner got it wrong, I have to say that your piggies belly is pretty big.
2. I think it would stress her out a bit too much with a belly that big I think you should just prepare for babies anyway, JUST IN-CASE!!
3.I see the belly and it is pretty large!!! I think you are right about the pregnancy!!! I found this video about baby-proofing.You should probably start now since a piggies gestion period is 53-73 days. It is pretty imformative. --
Baby Proofing Cages! - YouTube
4. Yea, just when you are having laptime, to make it easier, you should weigh her then to make her a bit calmer. With a scale for vegatables.
Well, I think you may want to seperate them if you do not want a back to back litter in the next few weeks!!!
Oooh I was wondering how you make a thread....... I am stupid...... And add pictures. Sorry
Good luck with the piggies!!!!