I've owned around 7 pregnant guinea pigs before and this one definitely looks pregnant. She's pretty young to have babies, you'll have to keep an eye on her. Anything could go wrong. However, it could be fine and the birth goes smoothly. She may be too young to have babies, but not too young to get pregnant. I wish all the best to you! She's a cutie. She could be chunky but from the picture she looks pretty pregnant. If you start to feel movement in her belly, she should be about 2 weeks from birth.