Is My Couch Dirty?

I purchased a cream color microfiber couch at Roomstore just a 3 months ago. I spilled a tiny bit of water on it and noticed that the wet spot looked black. It looked like I had smeared some black ink on it or something. The spot faded away once the water spot dried. However, it bothers me to think that my couch is really dirty. Is this the case? If so, how do I clean it? Any suggestions? Thanks in advance!