Working abroad is there in your Birth chart and therefore you will do your course and work overseas. You are presently in the mahadasha of Rahu and the antardasha of Mercury. Mercury is debilitated in the Navamsha chart. You should do the remedies of benefits in your life.
1. Wear Opal / White Sapphire / Diamond on your right hand middle finger
2. Recite Rahu Mantra “Om Brim Rahave Namaha” 108 times daily
The period of Rahu that is going on will be challenging, you should be more focused and willing to put efforts. I have given you the strong beej mantra of Rahu. Also your lagan is weak , wear any of the stones. Strengthening the lagan will build your confidence , help you be more focused and accept challenges. I do believe that doing these simple home remedies you will pass your exams.