Neurological issues. Me at the earliest.

From the past few days I am experiencing pain on the left and back side (mostly on right back side of my head).  Sometimes the pain is constant and sometimes its come and go. Sometimes I experience dizziness and weakness too. Sometimes I feel my head heavy and spinning. Though all this hasn't affected my daily routine as yet but I am fearing a brain inflammation/tumor or a neurological disorder. Would be grateful to you if you could explain me if the above symptoms are a cause of serious concern and what should be my next course of treatment. My family has faced a huge tragedy and its becoming extremely difficult to convey my problem to my parents and its beginning to affect my mental health too. Please guide me at the earliest.