What do gynaes check for at your first appointment after referred from polyclinic?

Can I check when polyclinic refers you for your first appt, what kind of things do they do? Do they arrange for blood test n ultrasound on same day? Cause I've just tested positive via polyclinic urine test and they refer me to hosp which is weeks away in Dec and I'm super anxious. Thinking if I should go GP for blood test to find out how many weeks in etc.