Maybe I'm farther than I thought???

So today I'm 7 weeks and 1 day since my last cycle, I dont see my actual doctor until Valentine's day, but I'm naturally a petite person and have always been a tiny person, but the last 2 days I've had customers at work approach me asking when I was due and I was uncomfortable because I dont feel like I'm far enough to be noticable. I'm thinking I'm farther than we thought OR twins 😱