Baby weight

Morgan

So I had a doctor appointment today I ask my obgyn could he tell me how much my baby weights he told me 3 1/2 pounds in 33 weeks an 2days should I be concerned because my due date is right around the corner September 11 an I would have thought he would be bigger than that . ? I'm freaking out but I don't want to overreact. Any advice ladies? Or does that mean I'm going to have a small baby ?