PLEASE help moms!!!

Jaxkie
Yesterday I went for my 20 wk scan (I'm only 19 wks at the moment though) & that's when they check everything about the baby, bones, fingers, spine, etc. But the dr told me instead of the plancenta being horizontally w/ the uterus it's curling up in the ends and said that could affect baby's growth. She said sometimes it fixes on its own but sometimes it doesn't. Has anyone else had this issue and what was the outcome of it or anything similar? PLEASE HELP. This is my third baby boy and never had this w/ the last two. 
& sorry if it doesn't make sense i try to word it as best as I could. Thanks!!