SEVERE lower back pain


34 weeks pregnant with twins. I’ve had some back pain and cramping the past few days but nothing too terrible. 2 days ago I noticed my urine output decreased. I finally went to the hospital 12 hours ago and my Urine came back clean. No explanation as to why I couldn’t really pee, and they said the back pain is probably just because I’m getting further along. About 5 hours after I got home, the back pain became excruciating. I will be laying down and get the worse pain of my life. It’s located on my right side and comes around the side and to my abdomen. Nothing is helping, I’m bawling in bed because it hurts so bad. I don’t want to go back to the hospital because they just told me I was fine. I have a Dr appt in 6 hours. Has anyone else had this? She also checked me and I was 1cm and 70% effaced. Also, my urine output has picked back up!