Upper Ab Pain. Noticable When Drinking/eating.

Can anyone help diagnose my problem? I've been recently battling a flu, and since I am now recovering, I thought my stomach problems was a small issue related to the flu. Well, it's been 3 days almost and the stomach pain is still here.

The pain is located what feels like right behind my upper abs. I try to drink water and the pain becomase very noticeable, so eating and drinking have become a task. Also, the fecial-matter has been dark lately. It has varied from liquid to recently small unhealthy looking dark portions. Has anyone heard of this or know of a remedy so I can eat normaly without the pain?