I saw an Angel It tried to grab me?

I was trying to astral project when instantly, an image of a flashing white male angel with a halo and a staff and wings kind of diving at me with its hand reaching for my face. its hand came right up to my face then i opened my eyes scared out my mind I did not think of an angel it just appeared no way have i seen that image of an angel in my life so how could I think it up ..... my heart nearly blew out my chest the shock it gave me.. most wierdest thing i have ever experienced.... Could it of possessed me is my biggest question?! People this is serious im a normal person and do not take part in religious acts ..... Why would that just appear in my head?? It felt like my body had been attacked when i opened my eyes my body was all fuzzy and light and numb all over instantly for about 10 seconds.... it was the scariest thing i have ever experienced..... Some one told me it could of been my higher self?? AND NO PEOPLE I AM NOT ON DRUGS!! How could it of just put that image in my mind??? Could it of possessed me? How can it scare me that much..... How can it just appear in my thoughts?? what does it mean if its hand is reaching for me????