Slow rising HCG any experiences and stories welcome

First beta : 8/29 (day of missed period) HCG 18

Second: 8/31. HCG 22

Third: 9/2 HCG 28

Fourth: 9/6 HCG 60

Fifth: 9/7 HCG 89

My dr says my doubling rates are going up slowly but she’s still concerned for ectopic, scan on Monday to tell for sure but I really really hope this was just a slow start. If it’s ectopic it’ll be my 3rd ectopic in a matter of 2 years. I know to not hope too much with the numbers I’m sure I would be well I’ve 500 with a healthy pregnancy at this point.

I’m so anxious idk what to do!

Any stories or experiences with slow rising HCG in the beginning weeks? Dr says I may be a week earlier I thought (4 instead of 5) since I wasn’t tracking ovulation. I just want a healthy babe. Just one that’s all we ask for, why is pregnancy so hard?