HCG levels

Hi ladies!

I’m 5 + 3 weeks today. I had blood work done 6 days ago and my HCG levels were 303.

Today they were 5,078! My levels doubled every 35 hours! They say levels normally double every 48-72 hours.

Is this indicative that I may possible have multiples? My follicle scan before trigger shot showed 2 great, mature follicles.

I have an US next Friday at 7 weeks so I’ll know for sure then, I just wanted some opinions!