I'm so sorry about your loss.
I started spotting on a Sunday and Wednesday evening (late) I passed the tissue. In my experience, I never bled a lot, it was mostly clots. As I progressed durring the day on Wednesday, the cramping got worse and worse, kind of like urgent menstrual cramps.
When the baby passed it was like a large sort of greyish mass (I was at 9 weeks but the baby had passed at 7). The relief was nearly instant and I went to sleep right away.
I'm sure you were told that you should head to the ER if you fill a pad more than 1x an hour or if you are experiencing a lot of pain.
You asked about trying again. I think that's different for everyone. You should make sure your HCG levels are dropping (blood test). Your dr/midwife can probably give you the info on how soon to try. For some it might be the next cycle, for others it might be more.
Again, I'm really sorry that you are going through this. I hope you stay well.