I have recently been getting headaches. Is it beacuse i spend too much time on the computer?

i have been getting minor/more painfull headaches, and i am alllwayyss on the computer. I have recently been geting hedaches, and it has been around 3-4 weeks.when i had gone to see the doctor he had told me to controll my time on te computer. I did so and i realised headaches got better. However could these headahes be anything else? i have not been suffering from anything else, just headaches.