Terrible Experience

Let me tell you my most miserable experience on campus.

After dinner last night, I went to the supermarket and wanted to buy some articles for daily use. When I passed through a milk tea shop, I bought a cup of so-called milk-tea which was made from milk tea powder. At first, I felt that it was a very good drink, (if it was me, I would write this way" it tasted good"),but when I was about to drink it off, it became a bit/little bitter. However, I didn't care (too much ) at that time. --> I'm not quite sure about this sentence.

Unexpectedly, I began to feel sick at midnight. I went to the toilet and vomited for two times and threw up all the food I had eaten. I felt so miserable that I couldn't sleep all night. Afterwards, I regretted to drinking the unhealthy drink.