Hi. I Have Developed An Insatiable Appetite, Particularly For Sweet

Hi. I have developed an insatiable appetite, particularly for sweet things. I have also been getting the shakes, in my fine motor areas and my upper body about 2-3 hours after eating, as well as a feeling of doom. I feel like my blood sugar and/or blood pressure has dropped, but I am able to keep on working. I am a 57 year old, overweight but reasonably fit female.