Congratulations on your positive pregnancy test! It's important to schedule your first doctor visit as soon as possible to ensure a healthy pregnancy. Typically, the first prenatal appointment is scheduled around 8 weeks gestation, so you may want to contact your healthcare provider now to secure an appointment. As for determining whether you are in your 5th or 6th week of pregnancy, it can be a bit confusing since counting starts from the first day of your last menstrual period (LMP). If you are certain about the date of your LMP, subtracting approximately two weeks from that date will give you an estimate of when conception occurred and help determine which week you are currently in. However, keep in mind that ultrasound measurements during your first prenatal visit will provide more accurate information about the gestational age of your baby.