Mild heachache at times and diziness.

I am a patient of minor cataract since last 2 months and there's little hazzyness in my vision. Also I am upsc aspirant and currently having lots of stress because of studies. I am having continuous mild dizziness and little headache not in forehead region but in upper part and also dizziness and like little but lack of consciousness. I read about the symptoms on google and it showeed brain cancer now apsrt from the exam I have got another stressful topic i.e my health now. I am very very concerned about it all the time and it leads to overthinking everytime. I don't discuss this with my parents because they'd also get stressed out and my father is hypertension patient, Can anyone help me out regarding this problem? Can it be stress induced symptoms only? My family don't have any cancer history but I am still very very stressed out. Kindly help me please.