female age 57, black loose stool for days, now nausea, vague weakness, and dry heaves with severe abdominal pain during retching. skin abnormally pale during feeling of nausea. When standing up will lose 50% of hearing and get dizzy and weak. Has high pain tolerance, but listed pain in gut as a 9 out of 10; now a 6 post-retching, I think she is low on blood, takes iron supplementation and others, recently taking arthritis strength tylenol. Help