Prolapse won’t go

I’m not sure what to do. I have uterus prolapse and my cervix comes out every time I have a bowel movement. Anyway I had a bowel movement and it come out it normally goes back in, in like 5mins after. But it’s still out. I’m 28 weeks pregnant. Idk if I go in or just wait until tomorrow morning to call my ob since they don’t have an after hours number