can you help me?

I'm trying to find out where the placenta is located? πŸ’™πŸ‘£πŸ’•
Can you tell if it's a boy or girl with the nub or skull theory?πŸ’•πŸ˜πŸ’™
This is my 11w3d ultrasound, baby measuring at 12 weeks here. Heart rate 166! πŸ’™βœ¨πŸ’•
Thanks