Well recently ive had alot of things going on, shakes, nausea, light headedness. My period is due now at any time. I had a tubal ligation and have had a sharp nagging pain in my left side for over a month. Been to the doctor and they found nothing. ok so i was diagnosed with kidney infection which seems to be reoccurring and now ive been having flushed cheeks, nausea, and i just feel awful. could these be related and why is it when i go to the doctor they find nothing? The only other time in my life did i have symptoms such as the shakes flushed nausea was when i was pregnant.