digestive upset meaning in English

消化不良
消化失调

So far, i have caused joe no trouble whatever-except for occasional mild digestive upsets .
至今我除了偶尔发生轻度消化紊乱以外，还没有给乔造成任何麻烦。
When switching dog foods , do it gradually over a week by increasing the ratio of new food to old food . this will help avoid digestive upsets
当更换狗狗食物是，请在一周时间内，逐渐的增加新食物在旧食物中的比例。这样能够避免狗狗的消化紊乱。