You could still try the reverse trendelenberg at home with a little creativity. Gravity really can do wonders to pull your gestational sac back up... We went out and got one of those foam mattress things... like the yellow kind. And we just fashioned it into a wedge that started at my back with the narrowest part of the wedge, and ending at my feet with the widest end of the wedge. Its not a true reverse trendelenberg, but it can help still fight gravity.
And try the yogurt trick, as infections are one of your biggest hurdles right now. If you were to contact a vaginal infection, then they wouldn't even try to delay the delivery of the baby. That's what happened with me. Once the infection ascended through my cervix and hit the sac, it ruptured it and travelled into the sac and infected Devon, the fluid, the sac, and eventually, my uterus... As soon as they detected the infection, they said they wouldn't even try to stop the baby from coming, as the baby has no chance of surviving that.
So still drink lots of water, try to do a reverse trendelenberg if you can at home, and try the yogurt. Good luck.