I LOVED that. These type of OMFG kinda trips are what I love seeing in here. It might take a while to process all of it and I find these kind of deep trips to have profound effects on my way of thinking for a long time. Thanks for sharing!
Fear is natural, since we've depended on an illusion, until that illusion is shown through. When I did something similar to what you did I was left with about a year of fear to deal with. It led me to many things I wouldn't have found otherwise. Meditation, loving-kindness... so on, so on, so on. I'm very grateful.
First off, if I read correctly, you ate 3.75 grams (comparatively) and decided, "Weak! Lets more than double it. Fuck that. Triple it!"? Bold move, sir (I presume, sir).
Holy moly, sir. Tomes have been written on this.
Fear of losing your ego, your "self", dying, that you're never going to be sane again, were you ever sane in the first place?, that you took too much-too much, impermanence (may be getting redundant with some of these), the realization you don't know shit, of the man coming to get you for your "illegal" act, the realization that you're not that cool, that you got lots to work on for people to think you're cool, maybe I shoulda chose her instead, why did I try that?, you've been kind of an asshole, that you haven't fulfilled your bucket list, that bucket lists are a little bit stupid, should've gone to trade school, of the CIA coming to get you?, is this person I ate all this LSD with in the CIA? (ok, probably half those may just be me, but...you get the point).