今天傍晚放学，我就觉得有点难受，头有点晕，很想吐，但是又吐不出来。
This evening, after school, I felt a bit uncomfortable, dizzy and nauseous, but I couldn't vomit.
回到家，我开始做作业。因为不舒服，我的反应变得很慢，做作业也很慢，一张数学用了很长的时间才做完，而且还错了几题。吃晚饭的时候，我只吃了一点点就吃不下了。过了一会儿，我终于忍不住来到卫生间吐了起来。晚上吃的饭都出现在我的眼前，喉咙里感觉酸酸的，眼泪也出来了。
Back home, I began to do my homework. Because of my discomfort, my reaction became very slow, and I did my homework very slowly. It took a long time to finish a piece of mathematics, and I also made several mistakes. At dinner, I can't eat more than a little. After a while, I finally couldn't help coming to the bathroom and vomiting. All the dinner I ate at night appeared in front of my eyes. My throat was sour and my tears came out.
哎，今天可真倒霉呀！
Oh, what a bad day!