Ive known people who did and they regret it now lol they told me that they should of went with the original name because they think their kid would of grown in them. Personally i have only name and two middle names....so worst comes to worst i can jumble the names around but weve been calling gim by his name since 18weeks so i think were pretty set....but we never know :) always go in with an open mind!
It happens all the time. I have always been told pick 2 or 3 names you like. Obviously you have one you love but have a couple on had that you like too, because sometimes baby just doesn't fit the name you loved. A few of my friends have done that.