has anyone have this happened

I was having some stomach pains the last couple of days and my friends who already had children kept telling me they were growing pains. Well yesterday morning I woke up with mucus running out and some blood. My OBGYN got me in right away. They did a ultrasound the baby was just fine(thank god) she did say the pain is growing pains and the mucus is normal. When they did the ultrasound they did find a tear in my placenta that's where the blood is coming from she didn't seemed concerned. Has anyone have this happen to them??? Thanks!