Horrible marijuana experience???? why?

i smoked weed for the second time about a month ago the first time was fun it make me giggly and creative and hungry i had no side affects after. the second time i smoked i smoke alott i felt ok the first 15 minutes i felt very happy and everything was funny after that 15 minutes i started to see things everything started to pause and skip i got very scared and thought i was nvr going to come out of it when people talked it echoed i felt very lost and like i wasent there like i was watching a movie i wanted it to stop so bad anyone have this kind of experice because its horrible and made me scared to do it again:(