Why is there a lot wrong with me?

I have a lot wrong with me. I inherited my Dad's flat feet, double vision and have a saddle bone deformity on my foot. I also have a slight lordosis, a slight dust allergy which gives me difficulty breathing through my nose at night. Apart from this I'm relatively normal but I'm worried because my mother has a predisposition gene for cancer and my auntie has periodontal disease. Is there a lot wrong with me? (I look fine at the moment, I'm not too small for my age, I'm 14, my face is alright, just wondering if I have a lot of minor imperfections and possibly one major one?) I was born six weeks prematurely, if that helps, and my father was 46 when he had me