I am so confused about my guinea pigs fluctuation in weight. 2 weeks ago, they werent gaining much weight, last week they gained a lot of weight, they gained 40 grams, with normal poop and everything. However this week, they lost a little weight and are having small poops. And all of this is with the same diet with the exception that somedays, I didnt have red cabbage because I ran out which they eat pretty regularly, they also had a few days off of herbs (I dont give the same herb everyday, and I give it in moderation of course, but the herbs I give are dill, parsley, basil, and mint). I am confusedd and really stressed about it.