YOU SAID:

my heart is beating too fast

INTO JAPANESE

心臓があまりにも速く

BACK INTO ENGLISH

The heart too quickly

INTO JAPANESE

心もすぐに

BACK INTO ENGLISH

Mind too quickly

INTO JAPANESE

気が早すぎます。

BACK INTO ENGLISH

Is too early.

INTO JAPANESE

早すぎます。

BACK INTO ENGLISH

Too early.

INTO JAPANESE

早すぎます。

BACK INTO ENGLISH

Too early.