Headache on my right side when I bend down or cough

so

Idk wtf is going on but for the past 11 days I’ve had this sort of throbbing pain in the right frontal side of my head whenever I bend over or cough or something strenuous or fast happens. It’s nothing like my head will explode but it’s VERY annoying and it prevents me from doing a lot like picking up my son’s toys or bending down a lot. Etc. I went to a small tiny clinic where I live and the doctor said it’s a sinus infection. I’m almost done with the antibiotics he prescribed but I don’t notice too much of a difference. Now my mind is jumping to like brain tumor or something. My eyes (mostly right eye) also is getting very tired lately. I work all day on the computer every day and I wear blue light glasses and I haven’t had too much of a problem except for now. I’m also super exhausted sometimes I feel like I could sleep for hours on end. Idk what this is