is it common in pregnancy to fear that I might lose the baby?

Adiba
Ladies...have any of you ever had constant fear that you might miscarry throughout your first trimester? I'm only 4 weeks and 3 days pregnant today and after reading all posts/articles about how common it is to have miscarriages during your first trimester I'm constantly worrying about it and skirting about how to prevent anything like that from happening.