Help With Mediation Gone Scary?

To preface I am fairly new to all psychic study. I have recently begun meditations, specifically guided ones to help my mind from wandering. I was doing one with Blue Sky Horizons to help with identifying spirit guides and it was a terrifying experience. I could hear the recording speak of light and sunshine, for the first bit I was jivving. I felt calm and at peace. I could feel the sand and sunlight. I walked up a footpath and saw the trees and touched roots hanging down from rocks to help steady myself as I climbed up the path. Once I reached the top I saw almost a temple formed from the bodies of trees, picture aesthetic pictures of overgrown dilapidated churches. I went inside to a clearing there. In the recording they had you approach a campfire in a clearing. I sat down and had a young brown bear just start playing next to me, which was cool. But everything slowly switched over to a giant sentient centipede towering over me. The sky was dark and stormy with lightning in the distance. I felt trapped and scared. I could remember my body but I couldn't get back to it. I was essentially frozen in its gaze. I did not feel any good intentions coming from this centipede. It would crawl around me in circles until its body was wrapped several times over. It never actually touched me though. We left the campfire a bit and the bear was gone but it was there when I came back. I couldn't concentrate on anything in the centipede's presence. It felt male? I don't know if that helps. There was also some imagery of a sickle mixed in. I really don't know what in all to include, but I came back to my body shaken to my core. I don't know if I feel safe. None of my research so far has helped me as it points to psychic future encounters with people and that doesn't seem right. I need help.