euphoria whe meditating and a question

[Erii]

I was meditating yesterday (I meditated twice, well, a last time but it was very short) they were about 25 mins each (the first two) during the 2nd time, it was more like I was trying to fall asleep, like my mind when to thoughts then i couldn't remember what i was just thinking, and I wasn't really consciously "choosing" my thoughts, I went to my "happy place" and visualized myself meditating, I tried to summon my spirit guide, higher self, and it was a cloaked figure (the first time i did this it was just a figure of light) and i couldn't see its face. i don't know if it was a spirit guide or higher self. i would ask it questions, and notes would fall from the sky saying yes or no...i could tell when i created the answer or when i didn't at one point i felt a rush come over me, my heart began beating super fast (I could feel it) and my face began twitching, what was this? it lasted about 20 seconds also, what was the cloaked figure? another question, how do you stop inner dialogue