Aging placenta!??

Went in for my 36 week checkup had an ultrasound Dr told me I have an aging placenta??? She said not to worry will just be getting a u/s at every next appt. I wasn't dialiated and baby was still floating. So no baby soon but I'm worried I googled old placenta and idk how to feel about it . has anyone been told this around 36 weeks ?? And I wanted to have my baby on my due date not earlier (reason why my lil one starts her first day of kindergarten on 23rd and its kind of a big deal due date is 28th I don't want to miss out on her important day I wanna be part she's still my baby) and I read women had to get induced because of aging placenta please any advice will help