I have black tongue and burning tongue sensation.it also hurts in middle of tongue like inflamed at bit. i was anemic a year ago had a hystectomy and ?

Worrisome: Changes such as this in the oral cavity should be evaluated immediately due to the concern for cancer or changes to the blood supply. That said, blackening of the tongue is commonly a side effect of bismuth use for upset stomach. Notably, your histories of anemia, hysterectomy nor burning mouth syndrome would be directly related to tongue discoloration.