In Canada it's 24w before they will try, 24w is considered viable. 12 weeks is your first trimester so 13 your rate drops to 3% but that's where the game changes... that's just.miscarriage doesn't include placenta detachment or preterm labor etc. It's just another load of hurdles. I know 2 ppl who lost their babies at 40w. I know handfuls of p who have had miscarriages I as one. And I know a couple ppl who lost their babies at 14-16w
make it at least 22 weeks for them to save your baby....