What does emptiness feel like for you?

Honestly just wondering bc I don't think I even understand it in myself. Do you think it's more of an emotional/physical thing or is it maybe a connection between both? The best way I could describe it is like a hole has been dug in my heart and kind of a psychological discomfort if that makes sense? Sometimes I think it feels like sitting in an empty room with no windows, no doors and no furniture. just uncomfortable. Curious to hear what you guys think :)