Feeling as though my brain is swelling for several days.

[LachlanWatson]

For the past 4-5 days, I have had a feeling as though my brain is swelling or pulsating, it does cause me a lot of pain, but it is bearable and does not stop me from continuing with day to day activities except for brief moments where the pain overwhelms me and staggers me. Also, when I tilt my head in a certain direction the pressure relieves from one area and moves to another, e.g. I tilt my head right the pressure moves to the right side of my head, if I tilt my head forward the pressure moves to the front of my head. When I tilt my head forward it also causes severe pain in my eyes.
Summary of symptoms:
-Throbbing pain in head ranging from bearable to overwhelming(Feels as though my brain is swelling).
-Throbbing pain shifts depending on direction head is tilted.
-Dizziness.
-Difficulty focusing.
-Sensitivity to loud noises.
It can't be a migraine or a headache, due to the fact that I am on migraine suppressing medication and I took 2 paracetamol tablets earlier.
I do have a history of head trauma, falling out of bed many times as a child, hit by falling objects (6 seperate times), hit with a softball(very hard ball) and hit with a cricket bat.