Feeling like I need to start over

My body is going through so much turmoil that I'm feeling uncomfortable. I ate candy today because it was the first thing that popped into my head to fix the light headed feeling after I already ate my normal food. Why dizzy after eating? Let me mention that my junk food was previously had all been Doritos and Sun chips. It wasn't like I was eating Snickers and Skittles. I drank a diet soda too because the dizziness didn't stop. I'm actually feeling like I'm eating more than usual. Just called the doctor to hopefully see what's wrong besides me not exercising-- that means Zumba is not going to happen tonight either.