Big or twin??

Jennifer
This is my second pregnancy. I'm 6 weeks 5 days and already my pants are snug or not fitting despite that at my appointment doc said I've lost 14lbs. I know they say you pop sooner with the second pregnancy but I'm not even at 7 weeks!! Could there be more than one in there? Anxiously awaiting ultrasound in 10 days to confirm due date and how far I am, and now if there is more than one.