That's exactly how everything happened to me. It's easier for me to write out the words than to speak them up. Thank you for giving more confidence, TalkinGuy :)

Being afraid of making mistakes is normal, and it helps to know what happens when you feel this while trying to talk. When people are afraid of making mistakes, it causes them to hesitate, feel unsure of themselves, and forget words that they already know. The hesitation and forgetting of words causes them to speak less clearly, which makes them feel like they are not as advanced as they really are. If a person can talk long enough that they start focusing on the subject of a conversation, they often forget about the fear and suddenly start speaking far more clearly. The person often does not know that this has happened, but it does. So don't let the fear of mistakes stop you from speaking. Even if it is very difficult and embarrassing at first, remember that after you speak while afraid long enough you will start to forget the fear and will automatically speak better without realizing it.