Hello girls ? We're having our 10 week scan tomorrow, my belly is big …

Hello girls ? We're having our 10 week scan tomorrow, my belly is big like 4 months old, my friend is also pregnant, her due date is a week earlier, her belly is small, I can barely tell, mine is bulging out and firm, has anyone had this before? I had an ultrasound at 5 weeks, there was no belly, heartbeat, healthy baby!