I'm pregnant with my 3rd child and up until a few days ago I was feeling excited. I read an article about a woman attending her 20 week scan and the baby had serious abnormalities and she had to have a termination a few weeks later. I can't stop worrying now and dreading the scan which is at the end of this week. What are the chances of anything being wrong? In my other pregnancies I didn't even think that anything could be wrong and thankfully everything was perfect with them both.