Headache
The headache remains, a pill does not help.
Most of the time, a headache does not indicate a brain tumor but has another cause such as tension headaches or migraine.
However, if a headache occurs suddenly or there's a change in your "normal" headache, it's best to contact your doctor. The headache can be intermittent, start gradually, and then subside. But over time, the pain will become progressively worse.
If you experience a headache at night or early in the morning, you should discuss this with your doctor.