have got a run = diarrhea (腹泻，痢疾)

【例句】
My son has trouble with diarrhea. I have to take him to see a doctor right now. 　　
我儿子拉肚子了。我得立刻带他去看医生。

How terrible! I feel like vomiting and have got a run. 　　
太糟了!我又想吐又想拉。