Physical Symptoms

I meditate daily and I have been noticing lately that I keep having strange physical feelings. At the beginning of my meditations, I do a visualization exercise where I surround myself in pure white light for protection. It is like me sending out positive energy so that way I only receive positive in return, and this is when the feeling starts. I have had these feelings for years, and they don't just happen when I meditate. Sometimes when I sense an evil spirit or just feel unsafe around a person or place, I get this weird feeling in my upper back.

There is this gentle pressure on my shoulder blades. It feels like there is energy attached there and it stretches out of my body like wings. The feeling can feel like an ache, an itch, two hot spots on my shoulders, or like it's vibrating. If I focus on the feeling, it sometimes feels like something will come out of my back, and that usually happens when I feel extremely scared/panicked or if I focus on the ache.

Whenever I meditate it feels like those spots vibrate the most, as if the energy there is being energized even more. If do energy work, such as energy healing a friend or trying to ease pain in my own body, the two spots on my shoulder blades vibrate again. And when I try to focus and release the pressure, it only makes it worse, but it's never been painful.

I went to a friend's house once to get rid of this demon that was attached to her house and was giving her nightmares and physical pain. As soon as I walked into the house, the two spots on my back started vibrating/aching as I went around sensing the area to find where the presence of the spirit was strongest. Her room was the strongest place and my back began to ache even more so. As I walked throughout the house during the session, my back vibrated intensely as I told the spirit to leave the house.

Once the spirit was gone, I went home. I fell onto my bed and could barely move due to my back. It didn't hurt, it just ached. It's not the same as an ache where you strain your back. It seems to just stay in that one spot every time. The only thing that helped ease the ache was a wet washcloth.

Sometimes during my meditations, I fly with angel wings and it sometimes jolts me out of my meditation because of the feelings in my back. Sometimes the feelings make me shudder too.

The feeling on my back doesn't scare me at all. It is a calming presence, as if the Archangel's wings are connected to me and are protecting me. When I feel the pressure, I seem to get a burst of energy that strengthens me.

I just want to know what this feeling is. Is it being caused by something? Why is it whenever I meditate, use energy, or do something with spirits it feels as if my shoulder blades are vibrating? Is it something I should try and get rid of? Or am I safe and this is all just in my head?