Hi mama! Pelvimetry is usually requested around 34-36 weeks ng pregnancy, or sometimes earlier if your OB has specific concerns about your pelvis size or shape, it helps them assess kung kaya ng pelvis mo ang vaginal delivery. Every OB may have slightly different timing though, so best to ask your doctor directly kung bakit at kailan nila ire-request sa iyo, para ma-ease out mo ang mind mo na! You're doing great taking care of yourself and baby, trust your OB's guidance, at remember na whatever happens, the goal is safe delivery para sa inyo both.