First off, I'm sorry if this is the wrong forum for this, this is the closet because I experienced a lot of DP/DR from this and nothing online seems to help, neither has my therapist. Also I am sorry and embarrassed that this is a drug related post.

Mid-April of this year I took some sort of MDMA capsule while in Australia and it was great. Pretty sure it was good. Don't remember how much it was but it was a safe amount. The next month my 'friend' says he has pure MDMA to sell so I buy 0.4g of it. Upon taking the 0.2 I notice the pills have crystals that were clear with a small small small hint of browning or yellowing tint to it but I just assume crystals are like that. There are also what appears to be small white clunks of what I am guessing now were crushed up pills? I took as much out as I could (they were capsules) I took the 0.2 felt nice, rolled etc. The next day I take them again (0.2) and I notice it takes about 2 to 3 hours to feel the effect and it is INTENSE. I was happy with the euphoria for about 10 minutes but then it became incredibly overwhelming like I was losing my mind or something, my heart began to race. I calm down eventually. I smoked cannabis (I smoked a lot almost every day for months pretty good strains such as blue dream) and everything seemed weird visually after I came down but that's just the comedown/day after.
Fast forward about 2 / 3 weeks and I am still feeling weird, like visually things are too vivid or seem too nice if that makes sense. Not an overwhelming amount but an amount that makes me uncomfortable. I can no longer smoke without focusing on my heartbeat. It goes up naturally and I am aware of that yet if I even take one or two hits boom anxiety (which I have a lot more of now) comes in. It's been since april and i still can't handle more than 1 or 2 hits and I had been smoking every day.

Anyway now I'm a hypochondriac, always checking my eyes for dilation, multi-vitamins, checking my pulse its about 65-75 average if its below that or high i think somethings wrong of course.
visual perception is still weird, not as bad but still just not right. Turns out I have a slight astigmatism so now I have glasses and whenever I take them off things look weird and I'll get anxiety after a while.
A huge thing is I feel like my brain is cluttered, not like brain fog (i got over that hell) but I don't feel as smart as I used to, I end up skimming instead of reading and I can't keep interest. It's been a while, I supplemented shortly with 5-htp not too much to mess with seratonin. and i take my d3 + omega 3 6 9 + raw multivitamin every day. something still feels different.
what happened?
how can i get over the hypochondria? was it induced by that, are there psychological tips to get through it. Yeah don't tell me not to do drugs because I want be doing them again, I've experimented enough but that's been my only bad experience and now I only want to smoke and that's if and / or when I'm ready.

Thanks and sorry for the super long post.
note: i am 18, not sure if brain development might have to do with it.