Brain storm

I have never revealed this before , I think I just pushed away and forgot all about it . Many years ago when I was about 23 , wow how the years pass by . Anyway  this is where I think evrything changed for me , where anxiety and depression really began . I started to feel then my sense  of reality changing in little blips then one day I got a strange sensation of something going on in my head , like it became hot in the centre of my brain and it felt like a little explosion or like a brain storm . I thought I had a stroke , Being a guy I pushed this accurance behind me , didn't seek any medical attention or advise . It would be great if anyone could explain what was going on and if that was the cause of anxiety and depression now . I can remember being very scared at the time .