36w2d measuring small..

Nova

I just had an appointment. Ive lost 2 lbs and I'm only measuring at 32 weeks. The doctor i had was new but she said it's just because baby is extremely low.. Thats why I'm measuring so small. I can't help but worry a little bit though. Has this ever happened to anyone else?! Being a whole 4 weeks behind just seems like a lot when I've been measuring right on track this entire pregnancy.