Worrying in first trimester :-/

I hate the waiting and the worry! I want to just be so excited and happy but can't help but be concerned. This is my first and I'm 9 weeks 3 days. I've had one doctors visit at 8 weeks and everything looked good. I go back June 10th at 11 weeks to hear the heart beat for the first time. I'm a nervous wreck! I think I've just heard too many sad stories on here and from friends :-( it doesn't help knowing I've only had one ultrasound and won't get another until 20 weeks when they will check for the gender. I can't wait for the second trimester to start! Although...I doubt I'll every stop worrying :-//