我的胃不太舒服。
wǒde wèi bùtài shūfú 。
My stomach doesn't feel very well.
吃完饭后,记得保护好你的胃。
chīwán fàn hòu , jìde bǎohù hǎo nǐde wèi 。
After eating, remember to take care of your stomach.
他因为胃痛去看医生。
tā yīnwèi wèitòng qù kàn yīshēng 。
He went to see the doctor because of stomach pain.