Girls, I have a question... At 18-21 weeks they put me on "Low placent…

Girls, I have a question... At 18-21 weeks they put me on "Low placental implantation". Now my due date is almost 27 weeks, in a couple of weeks I'll have an ultrasound and then I'll find out if it rose or not. I wanted to know, is anyone who gave birth with such a diagnosis as everything went well? Did you have ER or CS? Or maybe someone had it between +20 and 30 weeks and it didn't need to be worried about beforehand?!