Am I crazy?

Hillary
So I just got my BFP yesterday, YAY! My husband and I are SO happy. We have wanted this so badly! But I feel like because I have wanted this so badly, I can't help but worry about something going wrong. Like this little tiny thing inside me could just disappear and my world would be crushed. And then I realize that my fears are unfounded and the stress is not good for the baby, but I can't help myself from worrying about the worst. I'm just seeking some advice/comfort/support. If someone could please try to help me stop being so worried I would appreciate it!!