The described LSD "thumbprint" sounds more like 10-30mg to me. As a grain or two of table-top salt is about 1mg (*but this of course depends on the density of the substance). Either way it sounds like a horrifying experience for anyone that's not ready. And also for those that are. The first time I tried mushrooms, instead of 1 stem and a cap (of some fairly potent shrooms), I ate the entire bag. Then I made the furt…
Sounds like you also made a major mistake in tripping without an experienced guide to help you through the experience.
Any guide worth their salt would have helped you select the proper dose, would know that you're not going to be able to sleep off a serious psychedelic experience, and would have known how to help you have a positive experience.
Unfortunately, way too many people try psychedelics without having much of a clue as to how to use the substances constructively. Reading the following link would be a good start:
https://www.erowid.org/psychoactives/faqs/psychedelic_experi...