How fast can an aggressive brain tumor grow? i know i am crazy but any input greatly appreciated. was having headaches--had a negative mri 93 days ago. headaches again. it is not possible for a tumor to grow that fast and cause symptoms correct?

If your MRI was normal than you dont have a tumor. Most causes of headaches are not from tumor and they cause headache in later stages. No the tumor will not grow and cause headache in 93 days. Keep yourself occupied with positive thoughts and some activity like social work, charity or with friends. Good luck.

Brain tumors do not usually present with headaches, and typically need to be rather large and causing a significant mass effect to develop head pain. Your headaches are more likely to be triggered by such problems as dehydration, muscular tension in the neck, or even migraine, but multiple other mechanisms may be causative. See a neurologist for evaluation and treatment.