YOU SAID:
I’m gonna be 14 in 17days
INTO JAPANESE
あと17日で14歳
BACK INTO ENGLISH
17 days left and I'll be 14
INTO JAPANESE
あと17日で私は14歳になります
BACK INTO ENGLISH
In 17 days I will be 14 years old.
INTO JAPANESE
あと17日で私は14歳になります。
BACK INTO ENGLISH
In 17 days I will be 14 years old.
That didn't even make that much sense in English.