For the past several weeks, I ve been experiencing headaches, dizziness, nausea, tingling in my hands & fingers & a creeping feeling up the back of my neck to my scalp. I have hypothyroidism that causes me to have heart palpitations & lately they ve been coming more often. I am overweight & have high blood pressure. I have been doing some reading and, based on my symptoms, I think I may have diabetes. I have an appointment in a few days but am nervous it may not be soon enough. Any thoughts?