hai.can you please suggest me, I have few questions to ask my mom she is around 42 years of age now last week she had nausea and vomitting at night and after that she was ok but again after a week she suffered from same symptom along with fatigue and she had sensitive tooth and gum changed in to mild purple mixed with mild black color she has no stomach pain but still I am very upset that she may suffering from early stage of cancer so can you please suggest me is this a symptom of cancer ......