YOU SAID:

I forgot that I put spaghetti in my pocket this morning

INTO JAPANESE

今朝、スパゲッティをポケットに入れたことを忘れていました

BACK INTO ENGLISH

I forgot I put spaghetti in my pocket this morning

INTO JAPANESE

今朝、スパゲッティをポケットに入れたのを忘れてしまいました

BACK INTO ENGLISH

I forgot I put spaghetti in my pocket this morning