Don't really remember from my first pregnancy. But with this one (I'm 13 weeks) I had my first ultrasound around 7-8 weeks for dating, I will have my anatomy scan between 18-20ish weeks, depending on when they can fit me in, and I will hear the heartbeat for the first time around 15 weeks.
I was about 9 to 10 weeks when I first heard the heartbeat with the doppler. I had my first ultrasound at 15 weeks, and we could already tell he was a boy. But at 19 weeks we had another ultrasound to confirm his gender!