What Causes Headache With History Of Brain Tumor?

Hi Im really worried that i have a brain tumour. For about 2 years ive been having on and off headaches i wouldnt say there bad just mild and havent really got any worse through the 2 years. They ushally occur above my eyes and around my head feels like its tight, i somtimes get weird sensation too ( but i dont no if this is in my head). They come on when i become worried or think about scary thing happening. I also need glasses for the laptop which i have not been wearing could my headaches be from this also? Im so scared and have convinced myself i have a brain tumour. When i have a sore tummy or coughing i always asume the worst and look for ways of dignosing myself. Am i going mad or have i got a brain tumour?