YOU SAID:

I'm doing this at school because I have nothing to do, and I have a splitting headache

INTO JAPANESE

やることがなくて、頭が割れるようなので学校でやっています

BACK INTO ENGLISH

I don't have anything to do and I feel like my head is going to explode, so I do it at school

INTO JAPANESE

やることがなくて頭が爆発しそうなので学校でやってます

BACK INTO ENGLISH

I have nothing to do and my head is about to explode, so I do it at school

INTO JAPANESE

やることがなくて頭が爆発しそうなので学校でやってます

BACK INTO ENGLISH

I have nothing to do and my head is about to explode, so I do it at school