i was on the top of my roof ,before going to roof ,i had some strange feeling to to go on the roof quickly and nothing was going on after that feeling was started . even can't imagine that i may have the ufo sighting there.i just don't know much about them but after doing lot of research to my best ,it was not man made,not natural. i also researched about alien abduction and finally get to the result that whatever feeling/symptoms the alien abductee have while alien abduction , i also have the same feeling/symptoms since i was 7 years old and some how it enhanced now.and one more thing about ufo i observed is that it hovered in circular path and pulsated white light like those of flourecent tube lights mystiriously vanished . that's all what happened that time.