Kitkatz, people can be so insensitive without meaning to be and their ignorance or naivete or whatever it is doesn't make it any easier for us. I've had this experience around the issue of not having kids and sometimes I used to say very softly "Yes it is a great source of pain and your questions at this moment aren't making it any easier. I know you don't MEAN to make it harder but please know that you are." That usually produced some embarrassment but oh well...
Then again, you could just let em have it.
Take care sweet Kit and don't let the ignorant get to you.