In need of some advice, So I have been trying different fresh vegetable's like bell peppers, carrots, lettuce, celery, and I have even tried some fruit like banana, melon, and apple, but my guinea pig wont even try them! All she eats is her Alf Alfa hay and her pellets. Is there a way I can get her to like something new? (also she's very heavily prego so could it have to do with that or is she just picky)