Did i just have a seizure? ?

i was reaching up to get something off of a shelf when everything went black. i grabbed onto the closet door. i got a weird feeling in my stomach. i tried to walk over to the couch but my legs started julting. i couldnt straighten my legs or put any weight on my legs because they kept giving out. it only lasted about 45 seconds and then my vision started coming back. i was confused right after but then i started crying because i have never experienced anything like this before. i was also dripping sweat. i ate and drank a decent amount today so i know its not dehydration or anything like that. i am 22 years old and i am pretty healthy. i plan to make a dr appointment tomorrow but for now i just would like to know if this has happened to anyone else or if it sounds like possible seizure symptoms? thanks.