Pregnant again after miscarriage

Hello mummies! I am currently 4wks and 2days pregnant, 3 months after a miscarriage. I would like to know for those with same case like me, at how many weeks did you see your ob again upon learning that you are pregnant again? I am thinking to wait til 6weeks because im scared to know if there is a visible sac or fetal pole at 4wks; my last pregnancy, the doctor cannot see a fetal pole at 7 weeks. So please tell me what you think. Thanks!!