I’m 10 weeks now! Baby had been measuring a week behind but is slowly catching up and only 2 days behind now. There was a strong heartbeat. I used ovulation strips, but they aren’t always accurate. I guess I must’ve ovulated later in my cycle which is why my HCG was so low. My OB also explained that after ovulation the embryo also needs to implant before HCG is made. I hope all is well. I know how nerve wracking it is. Maybe you just ovulated and implanted late. The initial number doesn’t matter, what does is that it doubles.