Hi,
Wait until you're about six weeks and then phone your Dr's surgery and ask what the procedure is in your area. Some areas the GP sees you first and other's you book straight in with the midwife.
You'll see the midwife at around 8 weeks ish to be 'booked in' which is just filling in forms and answering a load of questions mostly about any relevant health issues, diet, lifestyle etc... The midwife will then book you into the hospital you want to give birth in, so have a think about it if you have more than one choice near you. You can change later if you want to (I did this) but it's a bit of a faff. You'll also have a blood and urine test and the midwife will book you in for your 12 week scan.
If you have any questions for her write a list and ask away!
HTH
Mrs B xxx