HI Inny, I'm not sure if you saw a spider or if you had a need to feel you saw one? maybe to detract you from some other fear you were feeling at that time? I know spiders seem to come up a lot for people that are "Troubled" my brother use to have terrible nightmares and run screaming that he'd seen spiders and snakes. He was told they were methaphor for his inner demons. But then again you may have seen a spider.