i was born 2/11/1954

All i know is that i was born on the 2nd of November, 1954, somewhere (possibly St. Marys in Praed Street, Paddington) in London, England, and adopted by a wonderful couple. The only birth certificate I have says I was born in England!!!!!!!!, and the certificate is then dated 3rd of January, 1958 !!!!!! Is this when I was adopted? The name I was given on that cert. is Tina Marie Simpson (my parents name). I had a wonderful childhood but I have" wanted to know" for many years, but would not do anything about it while my parents were still alive, as I did not wish to cause them any hurt. Also, I need to know about hereditry and genetic illnesses that may have been carried by either of my birth-parents. Thank you for taking the time to read this .