I have an irrational fear?

Hey I am 14 years old, and I recently suffered a migraine so bad that it restricted the blood flow to my language center, so I couldn't speak for a short while. This was back in February. My parents took me to the ER for fear it was a stroke or something, and they did a CAT scan and a blood test and said I was fine, but I think I suppressed those emotions because I am suffering from an irrational fear that I am losing my mind, or that there's something wrong with it that the CAT scan didn't pick up, and I also think it's amplified by all the chemical changes in my brain at this age, and lately I've been feeling kind of depressed and feeling all sorts of different emotions, like extreme fear of suicide or people committing suicide, and I'm trying to get it all released with different techniques, but I'm wondering is this kind of thing normal for a teen? Will I be okay? And no joke answers because I am extremely sensitive to things right now.