Female guinea pigs squabbling

Question
Hi we recently adopted two female guinea pigs that have been raised together by a family who had to give them up because they were moving in to a place that would not allow any pets.  One female is ten months old and the other is eight months.  We were given the cage that they have been raised in and have kept things pretty much the same.  The cage seems to be an adequate size although we do plan on making them a c&c cage if everything works out with keeping them.  We also give them floor time in an enclosed area several hours a day.  With all that said.. here's the question.  They have been rumbling at each other and squabbling quite a bit - raising their heads at each other, chasing, some light nipping.  I don't know if being in a new place has caused them to lose their pecking order and if one is trying to establish dominance.  This has been going on for about a week, and seems to be escalating.  Any thoughts on if they should eventually settle down?  Or if there is anything I can do other than to watch and wait?  I would hate to have to separate them. Thanks for your input :)

Answer
One thing is check and make sure they are both actually females, it sound like you might have two males, this would explain them getting along before bacause they were young and in a stable environment, then fighting when things changed. Two females usually getting along, and changing their surrounding usually wouldn't change this. Also do you have any other guinea pigs, is so this could have sparked a conflict. But first of all check the sex of your pigs, males will mave a dot in the middle of the y shape, which will extend if pressed above, females will have a slit in the middle of the y which will only slightly hinge out when pressed above. Two males will usually not get along once they start fighting, two females might just watch for serious signs of fighting like excessive chasing, chattering, any attacking, etc. Let me know if you have any more questions. Also a larger cage should help a lot.
Brittany Keith