What I think you are experiencing here, at least in part, is called Body Image Sight (my term).

Everyone can easily do the basics of this.

Relax with eyes closed... can be done when in bed, or sitting. Behind closed eyelids, gaze straight ahead. Hold your arms wide, fingers wide, and rotate your wrists, so your hands are twisting. Keep gazing directly ahead behind closed eyelids. With your peripheral vision, observe the movement of your hands, first one side and then the other. Do not move your eyeballs. You will notice that you can 'see' a pale shape moving where your hands are. With practice doing this, you will occasionally get flashes of your real hands...little visions if you like, where you'll see your hands in great detail and full color. If you continue experimenting with body image sight, you'll find you can see any part of your body in this way.

I think what you have been experiencing is related to this.

peace, robert