Anyone feel this too?

Ana
Im 23 weeks going on 24 with my 3rd..i have an marginal placenta first experience ..but im having unbelievable pressure down in the hoohaa area. .its feels like my vagina is opening up..sorry tmi..i have an ultrasound on friday to check my cervix and see if the placenta has moved...was just wondering if any of the moms feel this..