Low lying placenta

Sierra • I'm a full time working, mom of soon to be two boys. I adore my husband. I love to bake, crochet,and watch Gilmore Girls
Any one else being monitored for a low lying placenta? My doctor says I'm at 1.3 cm. The doctor says it's semi concern, but will more likely change before my ultrasound at 30wks. I'm at 22wk.