Peculiar Noises

I just want to ask if some others encounter the same strange things like I was having last night.

I go to sleep, and suddenly near my window I heard a very powerful noise I can't describe exactly, but was like the sound that a helicopter makes. I say "seems" because the sound in my opinion could not be made with any 'earth' objects. I'm not joking, I mean it was different and powerful.

The sound lasts about ten seconds, and then I started to become scared, followed by a 10-15 second pause, and then again the sound I was hearing, repeated three times. I couldn't get of the bed because I was frozen. I was very curious to listen and understand where that sound came from. I looked at my cell phone and the time was 3:28.

Now, more strange things. I get off the bed and immediately the sound starts again but this time it was very weird. At the end of that noise, I heard a morphing voice (like a voice morphing from a man voice to a women voice like a pitched one), like a screaming but not as powerful as the first noise. That finally ended when I turned on the light in my room.

I looked out the window...nothing...nothing in my yard, and I have a little yard. I went back to bed and I looked at my cell phone: 4:20. This was really freaking me out, how can this be possible? I was off the bed only for maximum ten minutes watching the window. I really need to solve this.

So, after five minutes I heard a dog on the street barking very peculiarly, six times every time, pause and then again barking six times. Again, the strange thing is because on my street are many dogs, but they not started to bark like this one. Only one dog on the street near my yard door started to howl.

Well, that's it. Maybe somebody give me an idea about all of these. Thank you.