A mom who worries too much?

I used to frequently dream of different ways my babies (now 2 and 3 years old) could pass away. Right before I gave birth to my first son, a friends baby sadly passed away from SIDS. After I had my son, I would stay up all night checking and making sure he was still breathing. It's been 3 years and I'm happy to say it has slowed down. I think every parent has anxiety about these things, you just need to learn how to control and deal with it. Maybe talking to other parents will help. I just kept telling myself that I didn't want to be that overprotective mom that kids grow up hating. I will always worry about them, but they need to experience life.