YOU SAID:
I would be incredibly happy I did not have to go through the stress of having exams
INTO JAPANESE
私は信じられないほど幸せになるでしょう。私は試験を受けるというストレスを乗り越える必要はありませんでした。
BACK INTO ENGLISH
I will be incredibly happy. I did not have to overcome the stress of taking the exam.
Come on, you can do better than that.