I keep getting dizzy during and after eating. I've changed my diets and still get the same feeling?

Get it checked. Based on your symptom pattern, please have it checked out with your doc asap...
Dizziness with meals. Simple question but a complex answer: 1) rule out autonomic/ vasomotor pathology related to gut distension with meals; 2) rule out endocrinopathy due to abnormal release of gut hormones; 3) rule out "dumping syndrome" whether or not related to diabetes; 4) rule out central nervous system problems; 5) rule out "irritable bowel"; 6) consider common issues like ulcer, inflammatory bowel, many others.