Im 22 years old, 23 soon and im really worried about bowel habits. This is very TMI but when i last went to the toilet there was 2 stools, one was a mix of normal shades of brown and looked fine, however one looked black i think, it was very very dark in colour. I grabbed some plastic gloves, the thin seethrough ones and tried to examine what was going on as i was panicking, and the stool that looked black when i broke it apart it was actually a normal colour inside. It was almost like a hard coating around it. Ive upped my fibre intake recently and the only thing i ate that was dark in colour was some dark chocolate cookies but that was 2 days ago, ive been drinking grape fanta and tango dark berry however this is a common thing ive had in the past that has never caused dark stool. Im so worried because i don't understand what this means and the black stool felt so dry and hard on the black part but it was literally just like a skin around a normal stool, what does this mean??