Ultrasound for prolapse

34 female. I have symptoms like vaginal heaviness, pain in pelvic area, feeling like air or bubbles coming from vagina from 3 weeks. I had a c section (second child)14 months ago, never gave a vaginal birth. bowl moments changed. GP ordered an ultrasound, during pap smear test, GP said vagina is very tight and she cannot see anything. will they be able to see stage 1 prolapse in ultrasound? It’s pelvic and trans vaginal ultrasound.