When I woke up to go to the bathroom in the middle of the night, I remembered there was some Calpas in the fridge. Even though it was the middle of the night, I ate it anyway.
When I went to the bathroom during the night, I suddenly thought of the dried sausage I had in the fridge. I knew I shouldn't eat it because it was the middle of the night, but I indulged anyway.
ーWhen I woke up to go to the bathroom in the middle of the night, I remembered there was some Calpas in the fridge. Even though it was the middle of the night, I ate it anyway.
「夜中トイレに起きた時、冷蔵庫にカルパスがあるのを思い出し、夜中なのに食べてしまった。」
wake up to go to the bathroom で「トイレのため起きる」
in the middle of the night で「夜中に」
fridge で「冷蔵庫」
ーWhen I went to the bathroom during the night, I suddenly thought of the dried sausage I had in the fridge. I knew I shouldn't eat it because it was the middle of the night, but I indulged anyway.
「夜中にトイレに行った時、冷蔵庫に入れておいたカルパスのことをふと思い出し、夜中だから食べるべきではないとわかっていたが、欲しいがままに食べてしまった。」
Calpas は日本独自の名称なので、なんのことを言っているかわからない人もいるでしょうから、dried sausage のように言うと良いかと思います。
indulge で「欲しいままに〜する」
ご参考まで！
カナダ 
