I hardly post here and just usually on here procrastinating but these questions seem to come up sooo much in exam period you may as well ban the phrase "can i".
However i will tell two motivating stories that will hopefully get you through (both of these students went to my school).
The first story is once a kid ranked 120 got a study score of 40 in further maths, he failed one SAC and did no study pretty much, however he decided to work hard for the exam and dropped a total of 2 marks, 1 for each exam. Subsequently he got a 40, now this is in further so keep in mind its competitive as it gets.
The second story is a kid in English Language he didnt drop a mark the whole year, 100% in everything, absolute gun. Got a B+ in his exam and got a 38 SS and also destroyed the cohort as a secondary prize!!
Moral of the story is, whats done is done, the exam should mean everything to you now and will mean everything for your SS in the subject. Smash the exam and i'll personally guarantee you a god damn 40 regardless of your SAC marks. If your still worrying about your SAC marks 11 days from your English exam, you should realize that your exam is more important than all your SAC marks combined.
Now stop thinking about the past, get off this website and study!!