Missy

Did your bubba have a hearing test when he was born?
MJ doesnt always startle to noises and i noted that when she was a baby she didnt always either... I remember thinking the same as you, but as she had a hearing test done when she was a coupke of days old (done in the hossy) i figured that she would be fine.

When you were pg, he was probably subjected to different noises and grew use to them, especially that of your other DS would have been around.

Maybe these things dont bother him, does he appear to recognise your voice and that of your family? when you sing songs is there any recognition?

If you are worried thou, go and see your Maternal health nurse as they will be able to check them and give you peace of mind.

Hope this helps