nice boyfriend you got there, sounds really responsible dragging you around while your foaming at the mouth and screaming and not taking you to the hospital. if he took you to get medical attention they would have given you a benzo and other drugs that would have pulled you out of the hell you were in and saved you from doing potentially permenent brain damage. he sounds like a real keeper. if you had died he would have been charged with manslaughter at the least because he took the drugs with you and probably played a role in getting them for you. If my girlfriend, or anyone for that matter, was freaking out in the way you described and it looked like a scene from evil dead, which it sounds like it did, I would have called 911 twice by the time the foam hit the floor.
it sounds like you didn't take acid, it sounds more like a research chemical with toxic overdose effects, like some sort of dragonfly compound. many people have died from taking doses that would have been fine if it were acid (say 5 tabs) and their brain ends up getting roasted.
stay away from psychadelics for a long time. once you have a real bad trip subsequent trips tend to pick up where the last one went off. you need to let your soul recover from what you went through, and at the least you should have a serious talk with your boyfriend. you could have easily died on the floor that night being tormented by a demonic clown while your boyfriend sits around letting you die because he's too much of a coward to call for help and possibly have to deal with a couple minor consequences or some awkward conversations. seriously.. what a shit head
and to the guy talking about how lsd doesnt cause permenent damage, first of all it absolutely can. just like any traumatic experience can cause severe ptsd, drug induced trauma or physical trauma experienced while under the influence can have a profound negative effect on people. I've experienced it myself. it may not show up on a brain scan, but it's there.
and thats assuming what you got was actually lsd. unless you know the lab where it came from or have gotten it tested you have no idea what it is. so while lsd may have mild physical effects on the brain, you're kidding yourself if you think that makes it safe. people have committed suicide on lsd, even more have attempted it. go tell them or their families how lsd doesn't have lasting effects.