It depends on your health insurance, for one thing. It also depends on if you're high-risk, if you have an important reason to know exactly how big the embryo is, or if you did IVF. They generally won't do more than two ultrasounds in a pregnancy if it's a normal one and there are no questions about the baby's health.
I got my ultsound on the fiirst visit they do one to measure the baby and make sure it's in the right place good luck
They did one at my first appointment.
Ditto, depends on your OB office. Some have certain weeks they want to do it so your first OB appointment they'll do a general estimate of your due date from last period. Some will book you as soon as you can. All depends.
Depends on ur obg office.
No they would have to book you one by appointment unless there is any emergency concern's.