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stomach ache; abdominal pain
昨日から腹痛がして、病院に行きました。
I've had a stomachache since yesterday, so I went to the hospital.
腹痛がひどくて、薬を飲みました。
My stomach hurt badly, so I took medicine.
腹痛のため、今日は会社を休みます。
Due to stomach pain, I will take the day off from work today.