12 weeks is when the chances get lower but miscarriage can happen at anytime before 20 weeks some people have stillbirths after that (i had one at 23 weeks last pregnancy) even at 40 weeks so there isnt really a 100% no pregnancy loss chance anything can happen the only thing you can do is take care of yourself have faith and pray that your baby will be ok...
You can have a miscarriage at any time throughout a pregnancy
From 12 to 16week some people can loose it anytime tbh but the chances less from 12 to 16 :) I used to worry about it 247 I used to sit up and read up on internet and ring hospital to see if baby was okay was so paranoid was unreal I'm now nearly 37week you will be fine the more u stress is not good at all midwife told me stress can cause miscarriages so do not stress and relax you will be fine lv wish u best :')
When you hit the 2nd trimester.
You are said to be in the clear at 16 weeks but my doctor told me after 12 weeks I was in the clear.