Thank you for the query.
Black stool always should be checked with bleeding from stomach as this indicates blood in stool
. If you do suffer from upper middle pain, usually after a meal, this can be bleeding peptic ulcer. That is why you should have upper GI endoscopy performed to rule this out.
If you do suffer from stomach pain during the period there might be a problem with ovaries. Left or right lower abdominal pain
will indicate ovarian inflammation
. If you do suffer also from pain during intercourse
, this can be endometriosis.
If your cramps and pains are associated with gas and stool blockage, this can be intestines obstruction due to inflammatory intestinal disease
for example. Therefore colonoscopy should be performed.
You should also have abdominal ultrasound, full blood work, urine analysis, pregnancy test, stool tests.
Hope this will help.