Please suggest. i am scared. Symptoms?

Hi Doctor, For the last 8 days, I have been experiencing a strange sensation in my head. It initially started on the left side at the back of my head, near the ear. For the past 4 days, it has changed to a feeling of heaviness or pressure, like there is some weight on that side. It is not really a headache, but I occasionally feel small, pin-like pains here and there. I have checked some of my neurological functions myself, and everything seems normal. I can move my eyes normally, walk properly, do household activities, and continue my office work without any problem. Do you think I still need a CT scan or MRI based on these symptoms? I am also quite scared about the possibility of a brain tumor/cancer. I understand that no one can rule that out without proper examination or scanning, but I wanted to know whether my symptoms alone suggest anything concerning that would require imaging. Please advise me on what I should do next.