I can't sleep.(p_-)

I become 20 years old 168 days later.

It's been 168 days since I've become 20 years old. ＊「私は１６８日の前に二十歳になった」の場合＊

I'm going to become 20 years old in 168 days. *｢私はまだ二十歳にならなかったが、168日の後でなる」の場合＊

I am pretty that I count it.

I am pretty sure that I can count it. ＊｢私はそれを数えることができる」の場合＊

I am pretty sure about it because I've counted it. ＊「私はそれを数えたので、これは正しい」の場合＊

なんちゃって（●＾o＾●） 

I can't sleep.(p_-)

It's been 168 days after I'v became 20 years old.
I am pretty sure that I can count.

なんちゃって（●＾o＾●）