It's always sad to hear when folk have unusual things happen and not ready
,
I agree with Noinch, not had flashback's while high more of a alternate place/world.
I had a bad episode (like watching t.v), recently while straight while talking with folk, 1st one freaked me out which really freaked out the poor guy i was talking too.
I figure after a few decades of doing psychedelics (i loved fly agaric's ), the brain restructures to allow easier access to the trippy bit ?, try meditating, it might help, if not try a few vitamin C doses.
If that's not yer thing Jordon just
Enjoy, be Happy, Smile it's the Sun-Shine of your Soul
p.s i found the smiley button