Meditation Experiences as a beginner

So I notice that I have what I consider to be intense meditation experiences as a beginner. I still consider myself as a beginner because I am not following any guidelines or books or yoga practices. Plus I get scared and stop meditating for long periods of times because of Fear of the unknown. But in my meditations it's just me and music or me and crystals (mostly Amethyst). Today I was listening to a Theta Vibration YouTube video and began to notice I was going to deeper into meditation I started to have Rapid Eye Movement. I told myself that I should not fear this and as I did I got passed the eye movement. I then started to feel my hands in a specific position and my index fingers being bent upwards toward the ceiling (not uncomfortable) I then became more blissful and serene. But my main question is, "IS it normal to feel your hands and arms raise mere inches off the bed? (I lay down during my meditations, I notice laying down works best for me.) What is my body healing in order to be feeling what I experience as this type of levitation in my arms? I have felt this in my legs too another time. What is my body doing in this process? Thanks in advance for any answer. I'm not sure who to talk to about my experiences. Thanks, Alicia