You don't sound awful at all... In my last pregnancy I left work early because the girl who say next to me had red bull breath and the sound of her breathing made me want to kick something, I couldn't bear talking to people and was generally annoyed by everyone and thing! So you sound absolutely fine!
When you are pregnant or have a newborn, people act as though the baby is the property of the world and I believe they pass on advice because they truly want what is best for baby. However, when you're constantly being given advice, it doesn't feel that way.
During pregnancy I found the best response was, "this is just what we're thinking now - we won't really know until baby arrives as they're all different" (gives them the message that you're flexible and that just because it worked for their son, it may not work for yours). After baby I always said, "this is working for us so we're happy with what we are doing at the moment - I'll bear that in mind if things change"
Good luck.xx
ps: this time next year you'll be one of us mums, inadvertently passing on advice! I swore I wouldn't be but I can hear myself so it sometimes... Especially about bf, blw, signing - I'm a jerk!