I had all of these symptoms after my first seizure when I was 20, the weakness, tiredness, tingling are all normal, I am afraid.
The metallic taste is also normal before you have an episode. As for your MRI scan being abnormal to be honest it will be, your brain has suffered a big shock.
As for the result ask your doctor, or even type it in to the internet search box, not only does it explain it but also puts it in normal terms (for us people that aren't doctors).
Hope this helps slightly .