Your Chart
From the information supplied, I've calculated that your Ascendant lies in Gemini at 9 degrees 37 minutes. That's significant for Mercury's next Retrograde period because Mercury will first transit your Ascendant, then turn Retrograde and retransit it, and then finally turn direct and transit it a third time.
However, the first transit is on Saturday 9th May, with the Mercury stationing Retrograde on Tuesday 19th May. The Retrograde transit will be on on Friday 29th May. Mercury will then station Direct on Wednesday 10th June (all dates being in local time) So when you take your exams, Mercury will be direct - assuming that they are not early than the 11th June.
But Mercury will be slow at that point, so it would be better if your exams began the following week. Your natal Mercury is in Virgo at 1 degree 40 minutes. Retrograde transiting Mercury will square it by sign and will begin to apply to it by degree before it stations Direct but the square will never be perfected, as the Station Direct is at 4 degrees 35 minutes. Nevertheless it's possible that you might well notice something during the Retrograde phase, as it's conjoining your Ascendant and then nearly perfecting that square to your Ascendant ruler.
The only other classic planets aspected are Sun and Venus both of which will be aspected by sextile.
If you want a more detailed coverage let me know once you get your exam dates and I'll pick out any that seem to be affected, especially if the exams come earlier than you are expecting, or fall in that very first part of Mercury Direct, when it is slow.
Also let me know those exam dates, if the period since your last birthday has been difficult or things have not really worked out as you'd hoped.
I've kept here to the transits of Mercury Retrograde and not checked the transits of other planets. So just because Mercury Retrograde doesn't seem to be a threat doesn't imply that things have to run smoothly. Again once you have the dates, I could take a look.