用英语怎么说“拉肚子”？

1.医学术语:diarrhea

如:He has trouble with diarrhea.
他拉肚子。
I had diarrhea. I wonder if I eat something bad yesterday.
我拉肚子，我怀疑是否昨天吃了不新鲜的东西。

2.口语
have loose bowels
have the runs

如:
I have loose bowels.
我拉肚子。

I still have the runs. I do not think I should eat anything today.
我还在拉肚子，今天不要吃东西比较好吧。

running stomach

diarrhea

have loose bowels

loose bowels