I am a mom of four, I had my last baby a year ago and had my tubes tied. The last couple of days I have been feeling sicker than usual. I have this pain in the lower right side of my back, and at times it hurts so bad I don't wanna move. Then there is the fact that I have been feeling like I need to vomit along with a constant stomach ache. I have been having awful nightsweats with a fever. I have missed my period by three weeks now. Also, I feel dizzy and lightheaded and my vision is somewhat blurred. I sleep anywhere from 6-9 hours a night. what could possibly be wrong with me?