YOU SAID:

i could feel my heart sink inside my chest in front of me

INTO JAPANESE

目の前の胸の中に心が沈むのを感じることができた

BACK INTO ENGLISH

I could feel my heart sinking in my chest in front of me

INTO JAPANESE

目の前の胸に心が沈むのが感じられた

BACK INTO ENGLISH

I felt my heart sink in my chest

INTO JAPANESE

胸に心が沈むのを感じた

BACK INTO ENGLISH

I felt my heart sink in my chest