Small again

It raised to 57 so still not doubling but rising. My doctor is convinced its not viable. She is ordering another beta for next Monday to see if it goes up anymore and look at the possibility that I was just extremely early when I found out. When I put in the 6 from my first beta til the 57 on Monday in the H.c.G. calc.ulator that I found, it shows my doubling time is 3.1 days, which is considered normal.. But the numbers are small. I don't know what to think. I just have to wait it out. Thank you for your comments/support. You ladies are so incredible!