 [ Symptoms ] what can i expect during week 31 of my pregnancy [ Disease ] baby  your baby measures about 18 inches long from head to toe and weighs about 3 5 pounds rather than hearing vibrations baby is nerve endings in his ears are connected now so that he can hear distinct sounds like familiar voices and music mom to be  your uterus now fills a large part of your abdomen and you have probably gained between 21 and 27 pounds you are probably feeling increasing excitement and anxiousness about the birth it will not be long now tip for the week  practice your breathing and relaxation exercises