Possible brain damage/ecstacy use?

so I used to do MDMA and ecstacy pills like every weekend and I never noticed anything wrong with me but this one night I dropped 20 pills (not all at once) witch resulted in the worst hangover of my life, I couldnt even walk 3 steps without getting so light headed I would have to sit down I had a unsteady heart beat for days after, I felt like electrical shocks through my body for a couple days after and I was depressed the whole week after. But after that hangover weird things started happening, one time I was in class and I got this insane thought that what if everyone in my class was a robot and I completely freaked out and I totally saw everyone in my class as robots It made me question if my whole life was real or not , that episode lasted like 45 seconds then I snapped out of it, and that was about like 5 months ago, then today I had 2 episodes, I saw this one guy at a party and his face looked like an ants face and I couldn't even recognize him at first, it disturbed me the image that I saw of him and then later tonight I saw another guy who looked like a duck to me and it took me like 10 seconds to recognize his face. I haven't done E in a while and these weird symptoms are showing up again, when I used to do E lots I remember having these symptoms and weird De ja Vu feelings all the time and such a bad memory.. then I was fine for a while til now!! wtff , is this the long term permanent brain damage showing up..? it's really freaking me out..