my last trip was on the 28th of may, since then I've been getting some headspace and alot of anxiety similar to that I had on the trip but I'm not sure if this is hppd or not. I have also been seeing small snow like particles very faintly sometimes when I look at things and sometimes at night I think I also get very faint quick flashbacks of the trip. I took 800ugs LSD and had 300mg edibles after the peak of the trip. I am very scared and Im not gonna be doing LSD or weed again, but I need to know if this is hppd or just some common flashbacks that happen to everyone shortly after the trip, I don't know what to do.