further along than you think?

Brooke
I am due for my first viability ultrasound oct 14. Tested positive on my Preg test few days ago. I'm not a skinny girl by any means. I currently weigh 212....normally 180-190 range but I've been gaining lately (all due to stress I thought). The pregnant test calculates 2-3 weeks along. I actually look pregnant. And it's quite noticeable and this whole time I've been thinking I have got to stop eating bad I'm gaining weight fast! Meanwhile, haven't missed a period. Basically now I'm wondering, my gosh.... what if I'm at 14 or 16 weeks and my first ultrasound is going to be a total shocker! I am freaking out and they won't see me before oct 14 based on the first day of my last period.