Your nausea may get worse if you try to do too much or if you are not getting adequate rest. Stay at home in bed as soon as you start to get nauseous. Laying down, avoiding exercise and sudden movements, and getting a bit more sleep will slow and stop your nausea and reduce your chances of vomiting. If necessary, take time off of work or school to do so. Staying in a single sick room may be easy, but the air will go stale and make you feel worse. Open a few windows to allow a breeze of fresh air, and when possible, take a few minutes to step outside. Taking a bubble bath may sound great, but adding in overly-scented perfumes will likely upset your stomach more. In general, avoid anything (perfumes or otherwise) with a very strong scent. Smell and taste are connected, so a strong smell can make you feel equally as sick as a bad taste. Keep your window open to allow fresh air in, and to keep bad smells out. The brightness, noise, and movement associated with your television, laptop, tablet, and phone can be overly stimulating and make an upset stomach worse. Instead, lay in bed with the lights dimmed and read a book or relax in a similar way. Taking time away from your electronics will ease your stomach and prevent an associated headache as well. Nothing is worse than feeling sick and being too hot or too cold as well. Stay at a comfortable temperature to make resting easy; add or remove layers of clothing and blankets, or take a short shower or bath. You can change the temperatures of the liquids you are drinking to help as well. If your stomach ache simply won’t go away and the urge to vomit is growing stronger, don’t stop it. Your body is trying to expel the cause of your illness from your body, so let it. Vomiting is certainly not an enjoyable activity, but it does an important job of helping you to heal. You’ll probably feel better afterwards anyway.

TL;DR in Chinese:
休息。 出去散散心。 避免强烈的气味。 远离你的电子产品。 调整你的温度。 不要阻止呕吐。