did this ever happen to you?

I was having a great day today. My recovery is going excellent. (85-90%) there. I was eating supper and all of a sudden i get these fast thoughts about exsistence and being a human and i felt my heart beat hard for a second and I paniced for 2 seconds and then I went back to being ok. Was this one of the last dying gasps of dr kickin in? Anyone who is recovering or recoverd, have you ever experienced this?

-Andy