I found out at 20 weeks. My doc is hopeful it will move up as this is fairly common around that time. I'll find out around 32 weeks if it has moved. I'm 25 weeks tomorrpw. No sex in the meantime. :(
I was told I had it at 18 weeks and went for an ultrasound a week later and it already moved up
I had complete placenta previa my first trimester but my the middle of my second trimester it had moved.
I have it now but I'm 2 aiming for wk 28 I'm only 23.4 now and if it moves they allow u to deliver if no c section is in our future!
the placenta can move around - so they might not have told you, since it was just 4 months
i know people that were scheduled for a c-section because of it, then 2 days before everything moved and it was fine