YOU SAID:

i have had a myriad of blunders in the past fortnight

INTO JAPANESE

私は過去2週間に無数の失敗をしました

BACK INTO ENGLISH

I have made countless mistakes in the last two weeks

INTO JAPANESE

過去2週間で数え切れないほどの間違いを犯しました

BACK INTO ENGLISH

I made countless mistakes in the last two weeks

INTO JAPANESE

過去2週間で数え切れないほどの間違いを犯しました

BACK INTO ENGLISH

I made countless mistakes in the last two weeks