11 week US, best Dr ever!

Jess
Today I had my second visit with my OB. I'm 11w1d and am not supposed to have next US until June 16 (had dating US at 6w4d). I told my dr I wanted to make our baby announcement in the next couple weeks so she did an ultrasound just so I could have a nice picture to go along with it! I also got to hear heartbeat which was AMAZING (156 bpm). Any nub/skull theory guesses? So in love with my little bean!!