YOU SAID:

I just had diarrhea and I’m in a lot of pain

INTO JAPANESE

私は下痢をしたばかりで、痛みがたくさんあります

BACK INTO ENGLISH

I just have diarrhea and have a lot of pain

INTO JAPANESE

私はただ下痢をしていて、たくさんの痛みがあります

BACK INTO ENGLISH

I just have diarrhea and have a lot of pain