Hi, I'm 20 yrs old. I have been experiencing floaters for a couple of years. Now I'm also experiencing flashes. I'm greatly concerned. I have no blurry vision. No curtain or shade of vision missing. However this may not make since but I have a feeling of pulling and tugging in eyes as if they were contracting. If this is a case of retinal tear or detachment in my eyes is it possible to feel changes in the eye. I.e. fluid moving inside the eyes. I also have weird sensations in the back of my head. What could this be?