Due Date & Still No Signs of Labor

Hello po. I'm 40 weeks today (based on last menstrual period) and still now signs of labor. I already lapsed my due date based sa ultrasound na Aug 13. Is this ok po? Meron po ba dito with similar experience? Hindi naman kasi ako niresetahan ng evening primrose or anything. Lakad na ako nang lakad 2x a day. Even tried food that can induce labor like pineapple & spicy food pero wala pa ring active labor.