Diagnosed with Irritable Uterus. In so much pain and there’s nothing I can do. Anyone have experience or advice?

I’m 34 weeks+6 days. I was at the office today and started to get really bad lower back pain that traveled to my front and hips more and more with each contraction. This happened from 12:00-2:30 with constant pain that did not ease. I called my OB nurse at 1:30 and told her what I was experiencing. She said as long as baby was moving at least 10 times an hour that I was okay. I called back at 2:00 and could barely speak to her the pain was so bad. She could hear it in my voice and said she was calling L&D; to let them know I was on my way. I arrived and they hooked me up to the monitors. I was having true contractions every 2-3 minutes. My blood pressure was okay and I was not dehydrated. They gave me 10mg of Procardia and it lessened the contractions for about 15 minutes. They came back just as strong after that. They did a cervical check after they came back so strong and I was 60% effaced and 1 cm dilated. I was 50% effaced at 33 week appointment. (I lost my mucus plug at 34+2)

I left the hospital two hours later with a prescription for the useless Procardia and in the same amount of pain I arrived with. Anyone else who has had IU: do we just “deal” with this pain for the rest of pregnancy? How do we know when the real labor starts? Are there ways to cope? Feeling very gloomy about these next 5 weeks, especially because I’ll be working full time.