I Might Have a Stomach Flu

I felt better this morning, but my condition got worse from evening as well as yesterday. Yesterday, I didn't have appetite at all, but I could eat today. However, I got diarrhea after eating. I think I might have a stomach flu. :(
I stayed at home and studied today. However, I have to go to post office tomorrow because I need to send a stuff to my customer.

 Today's Vocabulary

・ diarrhea : noun / 下痢　(Pronunciation is da`iəri'ːə )