HELP LADIES! I NEED POSITIVE STORIES ABOUT HAVING LOW HCG LEVELS!

So I found out that I am pregnant and my hcg levels are low (58) on 11-1-17 and (93) yesterday 11-2-17 obviously my levels are rising like they suppose to (which their suppose to double every 48-72 hours and my blood work was done 24 hours from the first blood test) but the doctor is concerned that I’m having a miscarriage again because at 4w and 6d the levels should be higher but when I google it says I’m in range so I don’t know what she’s talking about. Anyone else has had an experience like this before? I’ve been taking test everyday to see if my hcg are rising and surely it has! So I don’t know what to think anymore, I’m so scared that this will be my second loss this year!