Magda - I started having dark brown discharge when I was 7 weeks. Had an U/S done and they could see the sac but no heartbeat. They said it looked like I was only 5-6 weeks so they wanted to leave things as they thought my dates may just have been out. I knew my dates weren't wrong and just knew the worse was going to happen. I guess because I had had a previous loss (S/B twins at 30 wks) I just was optimistic any more. I had another U/S in 2 weeks and it had grown but still no heartbeat. I spoke to my OB about what options there were. He said D&C (which I didn't fancy - don't like generals), pessaries to bring on the M/C or just wait and see. I chose to wait and see. Light bleeding started and went on for a week. The morning I was due for my next U/S the bleeding was really heavy and filled pads even though I was sitting down. I started to decrease by the time I went to the hospital. I just knew that my baby was now gone and things would be over. The bleeding had stopped by the time I went in for my U/S and sure enough, nothing left. All clear and no need for anything further. For me letting the M/C take it's course was the right thing to do but everyone is different. And of course, if things hadn't have gone so smoothly I may have needed medical intervention.
But this was me. Everyone is different.

By the way. One cycle later I was pregnant with my DD no.1 and that pregnancy was smooth sailing (even though I was a nervous wreck half of the time).

Good luck and big hugs,
Debbie