My health situation..

[Atheist]

.. is probably not that good.
It began last friday, I was working out at the gym when all of a sudden I got this really painful headache. I went home, took a painkiller and didnt think more about it, altough it was very odd. I decided to take it easy for a couple of days, and went back to the gym last tuesday...and the pain came back. So the next morning I called and got an appointment at the doctor, which made a very basic examination...reflexes...pupils etc, then referred me to the ER...so I drove there. After spending 5 hours on the ER doing alot of tests, and a "cat scan", the doctors told me that they could not see a bleeding...but they saw something 5 millimeters of size in my brain.
I am going back to the hospital tomorrow morning to do another cat scan using "contrast fluid" (not sure this is the correct term in english) so the doctors can determine what it is.
Needless to say I am very worried
Has anyone else ever gone through something like this?