Ohhhh wow hon...
I was miserable being 4 cm for 2 weeks, let alone 6 cm.. I felt like baby was going to just fall out on me! I feel for you. That said, I'm very surprised they sent you home with you being 6cm. I was 36 1/2 and at 6 cm my labor stalled with my son, but doctor said she was not comfortable sending me home at that late of a stage. I had been in labor since 29 weeks. She pushed it along for me. I can see why they don't want to push it along, but are you close to the hospital if you do go into labor again? It could go very fast from here on out.. Not saying it WILL, just that it COULD. A friend of mine went from 6 to 10 in maybe 30 minutes. I hope all goes well for you and that you get relief soon!