Something weird

Hello everyone, tonight i have a weird experience and i wanna that you help me to understand what happened. While i laying in my bed i hear the sound of a Gong, it was a very lound sound, and seconds later I felt a tightness in the chest. The first thing I thought is that this related to a Covenant that I have or was only a coincidence, what do you think?

Interestingly enough I remember from my years reading Lobsang Rampa when I was younger that he mentions that you hear a gong type sound just before you release into the astral. And depending on where the suggested “silver cord” is attached, chest or stomach, who really knows, that could explain the feeling.

Sounds logical but the problem with that theory is that he was not asleep, I was watching to reading comics when all this happened.