YOU SAID:

my leg has fallen off and now it is bleeding

INTO JAPANESE

私の足が落ちて、今は出血している

BACK INTO ENGLISH

My feet were falling, now is bleeding

INTO JAPANESE

私の足が落ちていた、今は出血

BACK INTO ENGLISH

Bleeding, had fallen on my feet now

INTO JAPANESE

今私の足に落ちていた出血、

BACK INTO ENGLISH

Bleeding had fallen on my feet right now

INTO JAPANESE

今私の足に落ちていた出血

BACK INTO ENGLISH

Bleeding had fallen on my feet right now