Have you seen a doctor? Odds are against a tumor... Usually migraines, tension headaches or anxiety.
See a doctor. No one on the Internet can help.
Usually one sided symptoms , I think and am not a doc, migrane syndrome, migrane headache...I hope u can see a doc who can explain and reassure u.
I have experienced something like that but more severe, I had went to Children's Nationwide Hospital in Ohio, it took two neurologists to figure out what is wrong, which they never figured out why so I went to their eye clinic, eyes are good, went to OSU hospital the Neuro opto couldn't figure out why, had an mri at Children's everything came back clear, I got less unfortunate because nobody knows why I have headaches/migraines daily so I have to suffer but medication can cause headaches/migraines and so can stress, which stress will worsen it, seems like it's tension headaches and when something triggers it it seems to make it worse into a migraine, but if you're worried get a mri done, but if you do ask to drink contrast, it lightens up the brain more, but if I was you I wouldn't stress about a tumor, but talk to your doctor about medication for it
If you're appetite changes, or you drink caffeine on a regular basis and stop (withdrawals) and drink caffeine again etc.or if you don't drink enough water (causes the brain to dehydrate) those can be why you get them but mainly those are triggers to make the headaches worse, I know most of this because of this pamphlet I got from my neurologist at Children's for different kinds of headaches, triggers, and symptoms