Firstly I am completely new to Guinea pigs but I got two female Guinea pigs about 2 months old and put them in their cage but they dont seem to like each other and one chases the other away. Especially a night when they go into their little hut at the back. I am a bit worried as the one that is chased mustn't get much rest it also makes frightened scared noises. Is this normal or not and if not what should I do. Ps. I got them about 4 days ago