So Sib, you want to keep aware of the situation. The fact that you get migraines maybe makes it harder to see a change but I would think there would be one somehow.
The point of these stories is that weeks later after a perfectly good scan, things can change. It's also interesting how little most doctors unless they deal with this a lot know about brain injuries. I talked to several informally at the time that I know. The biggest misunderstanding was bleeding on the brain. In this particular case anyway, it was not bleeding that caused the fluid buildup and pushed the brain over. The fluid was clear and it's a reaction to possibly some initial bleeding that has stopped, or why it builds up I wasn't clear on. I'm not sure that the causes of fluid buildup are known exactly, but at some point if you have issues, you really need to see a neurologist.
"CT scanning may fail to depict small hemorrhages because of the similarity in attenuation between blood and adjacent bone and because of streak artifacts in the posterior fossa and inferior middle cranial fossa. MRI aids in the detection of small hematomas because of its multiplanar capabilities."
Just pay attention. :-) When Dad went to another doctor (finally, after the first one wasn't being smart), the dr tested the right knee reflex, and the left leg jerked. When Dad told me this (he was on his way to the hospital immediately after that), we laughed, but yikes.
(I think the clear fluid is spinal fluid build-up? I think that's what the doctor told me ... can't remember exactly. My dad had a couple of holes drilled in his head and they attached a bag; it was pale brownish, mostly clear liquid, like weak tea. The doctor was very pleased with the color.)