First time and anxious. Should i wait?

I just went to the polyclinic and have already gotten a referral letter to KKH. Doc asked to wait till next Fri (16 Feb) for KKH to call for appointment date. Doc said I am already at 8 or 9 weeks and able to scan already when I go KKH for appointment and most prolly KKH will set my appointment at first week of March. But I am feeling impatient and anxious. Is it advisable for me to go to a clinic that is able do scanning before my appointment is set at KKH?