Hi my HCG results have come back at 33. I was at the time 3 weeks and 6 days. I guess this is low but with it apparently doubling it seems on track?? Has anyone had low HCG levels and had a healthy pregnancy? I'm 38, had a previous miscarriage 2 months ago. I do have another HCG test booked in for tomorrow. I had a tiny little bit of blood in discharge 3 days ago and non since but I started progesterone pessary's straight away.