HCG Beta Test Results

Hi,

I had twins 2 years ago from an Iui. We are now trying to get pregnant again but really only want one this time! The dr only saw one mature follicle 3 days before iui. My first beta was 131 on 13dpiui and today at 16 dpiui it was 799. That is higher than my twins were on 16 dpiui(682). Is this a big jump? That’s 6x higher in 72 hours. Im nervous something happened and another egg grew or something!