One night I was meditating out on the balcony, sitting in the lotus position, focusing on my breath, when I started feeling as if my body was vibrating. Then, an orb of yellow light "materialised" inside of me: I don't know how to explain it, I could see it but also feel it in my lower chest. It was a beautiful sensation I had never experienced before. I felt something I can't really explain and started crying out of joy. I felt as I had become one with the sphere and felt blissful.
I slowly descended into the orb and became one with it; I didn't feel any physical sensation, it was as if I was on another plane of existence; there was infinite nothingness apart from the light and me, or maybe I had become the orb itself by getting absorbed by it.
What happened? Was it just my mind playing tricks on me?
I don't usually meditate, I'm not used to it but enjoy doing it from time to time, although I know I should be doing it more often.
I am an agnostic and have never had hallucinatory experiences or delusional paranoia. I don't do drugs nor alcohol.