Yeah, that's definitely happened to me a bunch. I remember it fondly more from when I was starting out. I recall one early experience where I came out of it and I remarked how I looked and felt like puddy or plato. It was an intense experience and I held up my hand to examine and it was as if my fingers were literally flowing right off the hand. Other people I've seen have also looked similar before. It's nothing to be concerned about.
"Science without religion is lame. Religion without science is blind" - Albert Einstein
"The Mighty One appears, the horizon shines. Atum appears on the smell of his censing, the Sunshine- god has risen in the sky, the Mansion of the pyramidion is in joy and all its inmates are assembled, a voice calls out within the shrine, shouting reverberates around the Netherworld." - Egyptian Book of the Dead
"Man fears time, but time fears the Pyramids" - 9th century Arab proverb