Slow rising hcg levels

Lauren
Has anyone had slow rising hcg levels? I'm about 6 wks and have been put on progesterone suppositories. My first hcg level was 2126 and doubled to 5215 96 hours later. 48 hours after that was only at 7487. They are doing another test on Friday to see if it is still rising - if so I will go in for a ultrasound to see what's up. I don't have any cramping or bleeding. I have sore breasts, increased appetite and slight nausea. What are your stories or thoughts from those of you with similar situations?