"...messed up in universities and exams" does this mean you are currently in university, or hoping to be accepted?
"...Now I have the only chance left." Keep in mind, life does not end with one exam, there is always another door that opens, so don't despair.
Having said this, you are mercury, symbol of education, at the last degree of pisces, so at your wits' end, in your fall so not in a strong position, and about to conjunct Chiron the wounded healer. So you are apparently paying the sins of days gone past, and will have to work to make up for it.
Moon in aquarius is approaching a square to mars in the 8th, your nervousness about the upcoming exam. Mars is in moon's triplicity and face, and in taurus, moon's exaltation, so you can overcome this.
Venus rules the 9th of higher education, it is in mercury's triplicity, and mercury is in Venus' exaltation of pisces, which promises you will position yourself well there.
Moon's next aspect is conjunction to sun, ruler of the university.
The 3rd cusp of exams is exactly conjunct the part of luck, and the part of knowledge, so your guardian angel is apparently looking over your shoulder to help you out.
Moon in triplicity, terms and face of mercury again indicates you winning over.
Mercury is also trine north node in the 10th, boding well.
You should make it, and also move on, after an initial obstacle.
Good luck with it.