My mother had German Measles during the 2nd month of pregnancy with me (I was born with 2 heart defects because of it - one has been repaired when I was a month old and the other one closed up by itself), but I didn't go deaf until I had spinal meningitis on October 1972 (a month before my 2nd birthday)...6 months later, my parents found out about my hearing. They took me to get my hearing tested after I didn't respond to them when they tried to call my name, and I could only say 1 or 2 words at age 2 (most 2 year olds can say simple sentences).....that's how they found out something's wrong.