Welcome to motherhood! You'll always worry about them! From now until forever. You'll just get used to it. If it's not one thing, it'll be another. You'll settle into a routine though once the baby is born. Just for now, enjoy being pregnant because it's the only time you'll be able to protect them from everything. My kids are 9,6 and 3. I worry about everything from kidnapping, to bicycle accidents, to school, bullies, discipline, money and so on and so on. While this is an emotional time for you, and your hormones are also playing a part in it, it'll calm down a little after you see your baby on the scan and know if he's developing ok and when you feel him move the first time, your worries will calm down. I found myself counting kicks daily just to make sure they were moving like they were supposed to. I think you're normal.