Uterine prolapse

Wasnt sure where to post this but this page gets a lot of traffic so hoping someone can offer some advise. I just had my baby almost 3 weeks ago. I have had 3 babies within 4 years. I had an incredibly smooth and easy delivery with this baby she popped right out i barely tore and I've felt fantastic since giving birth no pain down there or anything. Well the past 2 days i noticed I have this very uncomfortable feeling down there that is kinda painful and i didnt think it was normal for me to start hurting now when I've been fine since birth so while i was sitting on the toilet earlier i felt down there and noticed that it is bulging down there pretty bad at the opening of my vagina (sorry tmi) and that my cervix is BARELY inside my body. I plan to call my OB tomorrow to see if i can see him about this but I'm wondering if anyone else has experienced something like this? Its pretty uncomfortable and I'm not sure what hes gonna do about it I'm just kinda hoping to find someone who has delt with uterine prolapse before and hear your stories