Nervous- please send me good vibes!

Tomorrow is my first appointment to confirm pregnancy and to test my hormones. I feel like I'm going to go in there and they're going to tell me bad news. I'm 6 weeks pregnant according to my LMP but really I just conceived on the 21st. I have hormonal imbalance already from PCOS and am nervous my HCG isn't doing what it needs to do. I hardly have any symptoms. Please send prayers, good vibes, well wishes, and baby dust my way! I worked so hard for this pregnancy and I'm so nervous. Any of you have been in the same boat? If my HCG is low is there anything I can do? They're starting me on progesterone as well tomorrow. Has anyone started taking progesterone two weeks into their pregnancy- wondering if it's too late! Sorry for the rambling and thanks in advance!