Yes and no. Black stools signify the possibility that you may be experiencing a site of bleeding in your GI system (somewhere in your intestines). The best way to evaluate this is to go to your gastroenterologist
for further workup.
Most likely they will check your blood for anemia
. If you are anemic, it may signify you are bleeding from somewhere in your intestines. The only caveat is that you are a woman, and it's hard to tell if your anemia comes from your menstrual cycle or actually from another source of blood loss.
Does your family have a history of IBD (or inflammatory bowel disease)? If so, you may have either the condition known as Crohn's disease or Ulcerative colitis. In your workup, the GI doctor
will most likely perform a sigmoidoscopy or even a colonoscopy to make sure that your intestines[small bowel and colon] look ok. He/She may even perform biopsies of your intestines if there are any areas that look consistent with either for those disease processes.
Since I am unable to evaluate you in person, it's difficult for me to provide a definitive diagnosis. So before you browse the internet regarding these two disease processes, the best scenario would be to be evaluated by a gastroenterologist regarding your black stools and allow them to examine you and perform a workup for a diagnosis.