Headache diziness anxiety. Me please.

I am an aspirant of civil services examination. I am a graduate from IIT and failed thrice in upsc exam amd my parents want me to join something now so I've been thinking constantly about the best possible steps i could take to satisfy them and myself as well. I have constant dizziness and mild headache on right side of full head 80% of the time since last 10 days and also lots of sweating and ear burning and eye pain. Also I am not wearing my specs and have been diagnosed with catatact as it is genetic in my family. Also i have very negative thoughts like i am having some deadly disease like cancer etc so i am always worried even i had gerd and throat inflammation and thought of it to be throat cancer but was prescribed some anxiety tabs some 2 months ago. Now this time also I am very stressed due to constant dizziness and headache and not sure what to do. My BP is normal and my GP thinks it's due to stress and somewhat due to cataract and eye power also. Can anyone help me please.