To dream of the swamp, foretells about insecurity and unknowns you are thinking of. Probably there is a fear of being stuck in something you do not like, such as being in certain relationship or working at the same job. If you were walking in a swampy area, then it denotes to unfavorable situation you will get in. Consider that the dream could be seen as a good omen, but only in those cases where you will have to face the hardships and huge work to reach what you want to.
Read more about dreaming of Swamp in other dream meanings interpretations.