Hey guys, think I've figured it out. tgxmike was right. I found a loose screw on the right headlight, here's a video. No idea however on how to reach there and try to tighten it.
In the second part of the video you can see how the whole headlight unit moves when I apply some force to it. I tried to do the same thing with the other headlight and it didn't move at all.
Here's the link to the video.
http://flic.kr/p/8CHSLb
Cheers!!