Cervix, birth control, and BMs

For awhile now I have noticed that I had a constipation problem through the duration of my birth control, then I would have more normal BMs during my placebo/period. I assumed it a side effect of my pill. But it’s gotten worse so I decided to do a little investigating and noticed my cervix is sitting very low and I can feel it in my bowels. It feels like it’s shrinking the space for stool to move when it’s this low. Im 21 and feel like it’s unlikely that I have a prolapsed uterus, especially if it feels fine during my period. I was wondering if anyone else has this problem or any suggestions? Sorry this is weird