Subsequent Pregnancy

I was unsure where to post, so please point me in the right direction if I'm in the wrong spot. I was scrolling through my pregnancy portal on my obgyn website and saw under problems and concerns is listed "subsequent pregnancy in second trimester". I'm 25 weeks as of yesterday and I've been being monitored for Placenta Previa and have had random bleeding all through this pregnancy but never heard anyone mention subsequent pregnancy. This is my 3rd pregnancy, 3rd baby. Any advice???