Pregnancy hormones

Tegan
Hey guys i need advice and to calm my nerves. My last period was on the 25th of july, I'm 4 days late today. I've been confirmed im pregnant but im so worried. The day my period was due I got a positive blood test and my hormone level was 42, the next day they did another blood test as I was getting pains and my hormone level was 68. 2 days later I was still in pain so another blood test was done and my hormones level was 87. The doctor keeps saying thats to low and im worried im gonna lose the baby. Does my hormone level supose to be that low? Is it cause im 2 early. Im freaking out.