YOU SAID:
my head hurts after working in the mines.
INTO JAPANESE
鉱山での作業の後、頭が痛い。
BACK INTO ENGLISH
After working in the mine, my head hurts.
INTO JAPANESE
鉱山で働いた後、頭が痛い。
BACK INTO ENGLISH
After working in the mine, my head hurts.
You've done this before, haven't you.