Post-exam mode

Yesterday was my pathology exam. I had eight/8 days to prepare myself for the exam. Despite of this short time for exam preparation, I could of finished revising almost but as everything, but to remember things well it, you need to revise the all brush up on all the subjects together as one unit and connect integrate your the information. The night of before (Do you mean the night before the exam?) the exam, I couldn't sleep well. I kept revising reexamining and focusing on certain points recommended by my professor. I had only 3 three hours of rest. I didn't do well at on this exam although i revised I studied for it well. I couldn't remember some important details despite i knowing them clearly (It sounds like you are contradicting yourself. Do you mean that you couldn't remember the details before you took the exam?), and know even to the point that I knew where they were written in my book. I was so upset and nervous as my all of my work got lost (I'm not sure what you mean with this sentence as it doesn't make sense to me). I hope to overcome of these mistakes in before my next exam, which will be in 5 five days.

I hope I didn't change the meaning of what you were trying to say. With some of your sentences, I wasn't sure what you were trying to say. Please let me know if I misunderstood you.

I tried to use similar verbs to "revise", since it's not good English to repeat the same words over and over. For counting numbers past 5, it's fine to use number symbols instead of typing out the name for the number.

I hope you do well on your next exam, Ahmed.