Waiting it out and it's killing me!

I found out I was expecting on October 4th. It was a huge shock, but we were excited! My first visit was on October 20th, when I received a dating U/S and was told I was 5w6d and I was able to hear my baby's heartbeat. From November 1-5th, I began experiencing tightening and pressure low that made me think of contractions. When I'd rest, it would get better. On the 4th, along with the contraction like sensation, I was having major back cramps that wrapped around. I also noticed pink tinged discharge. On the 5th, while waiting for the dr's office to return my phone calls, I began spotting. I went later that day to see my dr and discovered my baby had passed or stopped growing at 7 weeks, there was no heartbeat. I should have been 8w2d at this point. The sac measured even smaller than the baby at this point and was pulled away from the uterine wall. I am devestated. I have had 5 other losses, in between my two kids (ages 18 and 6) but they never lasted as long as this one did. I would always get a positive at home and within a day or two, start my period. Only 1 other m/c was confirmed by a dr and that was after the fact during an ultrasound and left over tissue was discovered. I had so much hope for this pregnancy and thought it would end like my last (with my son), carrying full term and bringing home a healthy baby.

Now I sit and wait. The spotting has stopped. I'm only experiencing sharp, burning pains from time to time, on my right side. I have no idea what to expect because I've never had a loss this far along. It's torture. I think I've cried as much as I possibly can and I was to move on, yet I have to wait.

Had as anyone had a similar experience? How long can this last?

Waiting it out and it's killing me!