My concerns all started when for the past 3 days I haven't been eating properly I have only eaten 1 meal a day for the past three days I am worried I will get sick cause of this poor eating habit that I have gotten all of a sudden, this began two days after I arrived in China. The food is delicious but I don't feel hungry after my lunch and I feel kinda sick through out the day when I eat. Fortunately I had a friend that took packs of pepto bismol with them when they left to China but I don't want to rely on pepto bismol for the entire time I am in China. Is this something to be concerned about, and if it is what can I do about it.