Hey there,
I kinda know how you feel. Don't listen to the doctor's and nurses. All you need to do is focus on things being positive. When I was at my 20 weeks I had the same thing with my cervix, but I also had an infection. So a few weeks later we found out it was just beacuse of the infection and my cervix is a bit longer now. I took a whole month off for bedrest. And am now back on it due to unexplainable contracting about a month ago, but I some what know how you feel. Just try to keep your cool, and relax about things. I know it's hard, but ignore what the doctor's and nurses say and stay positive, and stay off your feet as much as possible. I'm sorry that it has been soo hard on you, but look up and I wish you, and your family nothing but the best!!! Take Care!!!
-Rebecca