I have gerd, so now I am scared I have esophageal cancer. I have nausea, fullness, etc. All normal blood work (CBC, CMP, TIBC, TSH, Iron).Should I worry. I’m 19?

Unlikely. Symptoms you describe may be due to ulcer disease. You should be followed by GI doctor and have periodic endoscopy to evaluate your GERD as well as test for possible ulcer disease. Very unlikely you have esophageal CA at this young age unless had previous caustic exposure like swallowing llye.