HCG and Progesterone levels

Hi ladies. I am 4weeks 6 days today and got my BFP at 3 weeks 2 days ❤. I've had my blood work completed twice this week 48hour apart. At 4w3d my HCG level was 1300 and my progesterone was 120. At 4w5d I repeated bloods and HGC more than doubled to 2800 but my progesterone dropped to 90. I'm pretty sure still I'm in a 'normal' range but wondering if anyone has experienced anything similar...? I've had all pregnancy symptoms consistently and strong since 4w and a little nervous as my first pregnancy following a missed miscarriage and D&C in August and my scan not for another 3 weeks. Thanks xx