Please help. I m a woman 74 years old. For about 2 months, I haven t been feeling well. Had a number of exams with generally good results. Blood work shows elevated CRP, and slightly higher leukocyte count. So far no diagnosis. My heart rate used to be in the 60s, now is about 90, have no energy, nauseous, sweat at night, belching, and pain in the back of the neck. My eating habit hasn t changed much. Thank you for your help, Karla