For the past month or so I have had increasing number of "weird" episodes at night. I am elderly 70 years old and awaken frequently during the night. When I awaken I see things that are not there. It appears like something that resembles a lacy transparent wall moving towards me or some sort of large glob (still lacy and transparent) moving across the room. Strangely this does not frighten me because I know it is not there though I occasionally put my hands up to push it away. iIn the last week or so what I "see" has included flashes or explosions of red as part of the over all image. Am I crazy, or hallucinating.