Many dreams often carry out moer than wading through what you just thought, or what you've been thinking on a lot lately, in the past etc.
Most times they can be more or less related directly to something in your waking life that is right, wrong, troubling you etc. Like the cliche dream we've most had where you are chased by something or someone, but you are completely frozen in place, unable to move or scream, or well you can slugishly barely move as the thing chasing you comes near, and you scream but there is no sound at all coming. and being chased in a dream, clichelike as it might sound, often means you're avoiding something in your waking life that you are very aware of, but perhaps think you shoulden't. IE: You saw something happen to someone, you should notify someone, but you didn't. as an example
There are many "Dream Interpretations" online, most saying the same about what kind of dream it is, and what it might mean to you exactly, as no dream can mean 1 thing, but it can mean many, only you can know what it is in your waking day that might be causing it.
Google things like "Dream Moods", "Dream Interpretations" or "Dream Meanings" and you'll find lots of lists =)