It's not a big problem, if you don't have diarrhea these two days. Because yogurt itself is fermented, it will only ferment more when it expires.

Extended data

Probiotics refer to a kind of intestinal physiological bacteria beneficial to human life and health, such as Bifidobacterium, Lactobacillus acidophilus, Lactobacillus casei and other lactic acid bacteria. At present, there are many kinds of yogurt products on the market, including solidified yogurt, stirred yogurt and juice yogurt with different juices, which are sweet and sour and suitable for different tastes.

No matter what kind of yogurt it is, it is characterized by containing lactic acid bacteria. These lactic acid bacteria will secrete substances beneficial to human health when they propagate in the human intestine, so yogurt has more benefits to the human body:

First, it can decompose lactose and protein in milk, which is more easily digested and absorbed by the human body;

Second, yogurt can promote the secretion of gastric juice, increase appetite and strengthen digestion;

Third, lactic acid bacteria can reduce the production of some carcinogens, so they have anti-cancer effects;

Fourth, it can inhibit the reproduction of spoilage bacteria in the intestine and weaken the toxins produced by spoilage bacteria in the intestine;

Fifth, it has the function of lowering cholesterol, especially suitable for people with hyperlipidemia.

References:

Baidu encyclopedia-yoghourt