YOU SAID:

I am tired and I have a headache because of a mystery reason.

INTO JAPANESE

疲れたし、謎の理由で痛い。

BACK INTO ENGLISH

And I'm tired and sore from a mystery why.

INTO JAPANESE

私は疲れていると謎から痛い理由。

BACK INTO ENGLISH

And I'm tired from the mysterious painful reason.

INTO JAPANESE

痛みの神秘的な理由から疲れています。

BACK INTO ENGLISH

I am tired from a mysterious pain.

INTO JAPANESE

神秘的な痛みから疲れた。

BACK INTO ENGLISH

I was tired from a mysterious pain.

INTO JAPANESE

神秘的な痛みが疲れた。

BACK INTO ENGLISH

A mysterious pain that I was tired.

INTO JAPANESE

私が疲れている神秘的な痛み。

BACK INTO ENGLISH

A mysterious pain I was tired.

INTO JAPANESE

神秘的な痛み疲れていた。

BACK INTO ENGLISH

A mysterious pain I was tired.