HCG 670 at 4w2d… multiples…?

Up from 65 on the 18th, now 670 on 23 November. Previous pregnancy was with twins and we lost them at almost 8 weeks. I’m now on progesterone, wondering if there’s any correlation with multiples…? Rapid rise, more than doubling every 48-72hrs. Having a scan next week 🤞 🌈