Hi TT,
Congratulations on your pregnancy!
Most Gynaes prefer to only see you at 6-8 weeks, mostly because before then you might not be able to see much.
But this can differ depending on the specific gynae...
That said however, most gynaes are also rather full, so I would suggest you phone as soon as possible, and ask them when they would like you to come, and make the appointment now already.
I waited till 8 weeks to make the appointment with my first pregnancy, and ended up only getting an appointment at 12 weeks!!!