Mind running wild. Suggestive mind control. Don't worry, its happened to me also. You may have already had a stomach bug ready to hit, being high while feeling sick is an out-of-control feeling. Cannabis has been proven to deter nausea even during chemo. Thats an incredible feat, Don't go on thinking herb made you sick. unless the same batch makes you sick again. Then start asking your guy some Q's.
For the time, consider it a fluke.