YOU SAID:

I don't even know what to say, too much on my mind.

INTO JAPANESE

私は何を言うべきかさえ私の心にあまりにも知りません。

BACK INTO ENGLISH

I don't even know in my mind even what to say.

INTO JAPANESE

私は何を言っても私の心の中でさえ知らない。

BACK INTO ENGLISH

I do not even know in my heart no matter what I say.

INTO JAPANESE

私が何を言っても私は私の心の中でさえ知らない。

BACK INTO ENGLISH

Whatever I say I do not even know in my heart.

INTO JAPANESE

私が何を言おうと私は私の心の中にさえ知らない。

BACK INTO ENGLISH

I don't even know in my mind what I say.

INTO JAPANESE

私の頭の中で私が何を言っているのかさえ私は知りません。

BACK INTO ENGLISH

I do not even know what I am saying in my head.

INTO JAPANESE

私の頭の中で私が言っていることすら知らない。

BACK INTO ENGLISH

I don't even know what I'm saying in my head.

INTO JAPANESE

私の頭の中で私が言っていることすら分からない。

BACK INTO ENGLISH

I do not even understand what I am saying in my head.

INTO JAPANESE

頭の中で私が言っていることさえ理解できません。

BACK INTO ENGLISH

I can not even understand what I am saying in my head.

INTO JAPANESE

頭の中で私が言っていることさえ理解できません。

BACK INTO ENGLISH

I can not even understand what I am saying in my head.