It depends whether you're public or private.
With dd I was public so the first appointment was just taking base blood pressure and weight, going over family and health history, talking about prenatal vitamins, and I got a referall for my blood tests (to check blood group, immunities and antibodies etc).

This time I'm seeing a private OB so it was all the same as above plus I got an u/s. My first appt was at 6w2d and we got to see the heartbeat which was nice.