feelings after the test

Today I took an English test and I didn't do well in on the reading session section. I feel very upset because I've already prepared for this test for a month!
There are were three passages in the reading session section. The third one is was the most difficult. I can could hardly understand what it is was trying to say. There was so many much jargons, you know, a lot of technical terms. They almost stifled [what do you mean by stifle?] me on in the test room.
Now I feel that I don't want to do nothing anything, though it will not help anything that's already happened. I don't have any mood to [or, "My mood is so dark that I cannot"] prepare for the follow next exam.

[Good job with the writing, but be careful with your verb tenses. Get some rest, and you will feel better. Everyone fails, but not everyone tries again. Will you be one of the people who tries again?]