Chances of miscarriage at 3rd trim

Im a ftm, just entered 3rd trim, will be having my baby in sept. Not a day goes by that i dont fear suddenly having a miscarriage. Since the day i got to know im pregnant till now, even when baby is active and kicking hard, i cant brush of the fear and overthinking of anytime we can have a miscarriage. So far all blood test, scans are fine. What are the chances of having a miscarriage in 3rd trim? Is it very slim ? How do i brush of the thought and think positive that baby will be fine and i will deliver a healthy baby. 😣😣 And nope ive never had miscarriage before, this is my first pregnancy. #FTM