I feel for you CelticMoon, I hadn't thought about it being a rude question! I have some people ask me if it took us long to fall pregnant people I don't even know very well. I think that is my own private information and it has nothing to do with the outcome! I don't think 20 is too young to have a baby. If you are happy and you know that you can give it all the love in the world then that is all that matters! Just tell people that your happily pregnant and you both can't wait to have the baby. Im sure your friends will come round when they see how happy you both are!
Enjoy your pregnancy!