Bad artery flow but healthy baby

Has anyone ever experienced bad artery flow to their placenta but babies growth and over all vitals have been good? Im currently 30weeks5days and under daily hospital monitoring as all the fetal doctors are calling me a medical anomaly. They are basically checking her and me day by day to figure out when to deliver her. But each very highly skilled fetal doctor is saying they have never seen a placenta acting the way mine is but still have a perfectly healthy baby. It not preeclampsia as i have no signs or symptoms of that either. They all seem to think they will need to do an autopsy on my placenta to see if they can find a cause or reason.