for the past week and a half, ive been very light headed, even walking from one room to the other. I am constatly hungry, i'll eat a meal and within 20 minutes I feel like I havent eaten all day. I have a few sharp pains in my stomach once in a while, and the past about 3 days ive felt nauseous if I havent eaten, ill get headaches and dizzy. and the past 2 days ive had low pelvic pains almost like menstrual cramps but sharper.. should I go in to an urgent care/ emergency?