hi i had gone through your query and understand your concerns. i would come up with three possibilities
1.the first one may be,MIGRAINE;
-may be unable handle stress
-may be result of liver
diseases;confirm with LIVER FUNCTION TESTS and ultrasound
scanning for abdomen
--may be hereditary;your family history of similar complaints confirm the diagnosis
2.second possibility is, FLATULENT DYSPEPSIA
or ACID PEPTIC DYSPEPSIA;
-stress also play an important role for developing this condition.
the suppressed strong emotions like anger worry etc have caused the inflammations they will not get better until these feelings have come out into the open.
-taking too much pain killers,steroids
,alcohol are some possible causes
3.the third possibility is,ANEMIA;check your Hb levels may confirm the diagnosis.
I hope this is helpful for you, thank you