8w 6d but no fetal pole

Just went to my first U/s appointment and I'm suppose to be 8w 6d from my last mp but doctor measure 6 weeks and 6 days sack but see no fetal pole at all. It was empty. I haven't had any cramping or heavy bleeding and my cervix is closed but no baby was shown . Has anyone been through this before ? He thinks I'm either having a miscarriage or I'm early with my dates .i have another appointment scheduled for next week to see if anything progresses . Please pray for me because I had a miscarriage this time last year and the baby stopped developing at 6 weeks. I'm gonna keep praying and trust God to handle this.