You draw these but you don't know what they mean. Hmm... interesting. Apparently you feel they're more than just doodles, right? What are you thinking while you're in the process of drawing these images? Are you in any particular state of mind? Are you in any sort of trance state? Is there a possibility that you're engaging in what is known as "automatic writing"? Many years ago, when I was married, my wife did automatic writing. Once, she came up with something somewhat similar to what you've posted here, although hers was more like some form of writing, kind of like hieroglyphs. Yours, on the other hand, have a lot of symmetry. That's interesting in itself. But I did notice that yours also resembles Sumerian cuneiform characters. Check out this example:
http://en.wikipedia.org/wiki/File:Sumer ... c_Adab.jpg.
It seemed to me that the middle section of the image you posted
might correctly be viewed vertically, like this:
Just a guess. [unsure] Did you draw this in the horizontal position as you've posted it, or vertically, as in the image above?