Breeding, Unexpected Pregnancy, PPD

Question
Hi, I just have a quick question-I adopted two beautiful guinea pigs about a month and a half ago..they were at that time 5 months. They came from a rather large litter and were housed with both the mother and the father, the only other boy in the litter was kept in a different area due to his agrresion toward his father.Three weeks ago I found out that one of the girls was very pregnant she gave birth 06/11/06 to a litter of 7 (3-girls , 4 boys) . This is were everyone freaked out the other sow who we never felt anything moving inside of-no clue-gave birth 06/27/06 all apparently still born.  Is there any chance that the sow who just gave birth (Charlie is her name) be traumatized by the still birth? In the last few weeks she has shown aggresion toward the other sow (Sheldon) and her babies so we now keep her separate.  
Please respond to either the above email or to nyghtsong@yahoo.com Thanks!  

Answer
Hello, yes it is possible that she may be having a little bit of depression and anxiety. It happens quite a bit in small animals after they give birth. They act nervous and don't like to be picked up or held or anything, their behavior changes. The best thing to do is to keep her seperated and keep her in a quiet and calm room for a few days and then try to handle her and see if she still acts funny towards the other guinea pig. If she keeps acting funny keep her seperated completely.