Threatened pre-term 33weeks

Im 33 weeks and lost my mucous plug and started dialating around 29 weeks. Then at 31 weeks started getting horrible pain and contractions everytime i try to do anything. They said i have an irritable uterus. So now im on bed rest and dr gave me flexeril to help with the muscle pain and contractions. Im scared because now im 33 weeks and I feel so much pressure in my pelvis. It hurts so bad to walk and i cant do anything. I feel like shes not going to stay in much longer. Im worried. Has anyone had any experience like this? Last time they checked a few weeks ago i was dialated to a 2, but they dont want to check me now because they think its best to leave the cervix alone right now.