strange lights etc

I am 12 and live in Melbourne, Australia.
some nights i see lights in the sky. their not planes, or anything else from Earth. they are red,white and green and spin around, i never see one at a time, usually 2-5. they tend to fly around my house and my neighbors house, who also sees them. They go slow at first, but then randomly go flying faster and then within seconds dissapear. I sometimes have dreams about aliens, but they feel so real. and one night at around 2 am i woke up on my couch and couldn't remember anything from that night. Some nights i see lights outside my window, and wake up with bruises or scratches that weren't there before. i went camping one night with my friends, and it was probably the middle of the night, when i woke up and had to go to the toilet, so i got out the car (yes we were sleeping in the car) and heard a growl, not like a dog or anything, like something i never heard before. I got back in the car and was looking out the window and saw some lights in the sky off not to far in the distance. But the worst experience i had was when i heard banging in my basement. i felt compelled to go there, so i started walking, when i got to the basement i felt a sharp pain in my neck and passed out. i woke up with a massive headache, but back in my room.