I dont know but I will say when I had a miscarriage my pregnancy tests would kind of fluctuate. Like one day the line would be pretty faint, the next super dark. I never got my HCG tested because the miscarriage happened fairly early, around 7 weeks. So it seems my HCG levels were alternately low and then normal for pregnancy- not sure how different it would be in your case since your levels are higher than normal
I will say there's no sense worrying about it. I think one of the best things for pregnancy is keeping stress and anxiety low, so I would do everything you can to keep calm and not get in your head about it. Whatever happens happens. Maybe take some magnesium if you find yourself unable to emotionally calm down