Hexahydrocannabinol, which is synthetically produced as a result of hydrogenating cannabis extracts. It is psychoactive and produces a high, but is typically considered 50-70% less potent than traditional delta-9 THC. As a different cannabinoid, it produces a different kind of high than delta-9 THC as well.

The issue you have isn't that you took HHC per se, but you took it with another caanibinoid. This creates a sympathetic uptake. The endocanniboid sytem experiences an increased reaction due to the interaction of multiple cannabinoids binding to it, referred to as the Entourage Effect. This can result in the perception of intoxication being amplified hugely. This is similar to how your brain reacts to seratonin in the presence of SSRI antidepressants.

It sounds to me like you are experiencing symptoms of having a dosage that is far too high for your tolerance level. If you continue to try using it. I would recommend starting with delta-8 or HHC and sticking to gummies. Check the packaging to determine the amount of cannabinoid in each gummy. Normal amounts are 25-50mg for standard doses. Cut the gummy down to a quarter of total (literally cut it into 4 equal parts). Take one quarter close to when you eat, and wait an hour to determine the effects.

That low of a dose should never negatively effect anyone, maybe give a slight feeling of haziness and relaxation. If you have bad symptoms from that dose, you need to either stop consuming entirely, see a doctor, or both. If you do ok, you can take another quarter (or eighth) and again, wait an hour. Vaping is risky, because it could easily be a dab, a blended dab, or high concentration solution. Inhalation is also the fastest way to get it to your brain, smoking and dabbing being fastest, so judging the dose is very hard for a newb.

Do a little research and get educated on what these products are and how the work and affect you. This isn't a lethal drug, but it can fuck up your world profoundly if you approach it from ignorance or improperly consume. Please misbehave responsibly.