Pain on the right side of my head above my ear?

Basically, a few days ago it was more but now it's just above my ear. It hurts more when I press it and i keep pressing becuase i am paranoid i have a brain tumour so i keep feeling to see if i have a lump even though i know you can't feel brain tumour lumps. it hurts in just the one thing. what shall i do? what is it? i don't know if it feels lumpy