Advice Please!!!

Ok heres my story, I am an 19 year old male who took Antibiotics for 5 months for my skin when I was 16. Ever since then I have had these symptoms

-Very red irritated eyes
-easily pulled muscles
-dry dry skin
-overall tired feeling
-cold hands and feet

I went to the doctors and they took a blood test and stool tests and according to them I am perfectly healthy, which is laughable to me. They also said theres no way I am celiac diabetic or any major condition. I JUST WANNA BE NORMAL AGAIN! Advice would be greatly appreciated

-Evan