When I had my d&c they didn't find any tissue because I had passed it two night before. They went ahead and did a d&c though to make sure. I would imagine if you passed the same thing twice, you are fine.
You are correct, no one understands what you are going through. They say they are sorry and then move on to the next topic like it was nothing. I was lucky to have my mom. She, like me, had two healthy pregnancies and then miscarried twice before getting pregnant with my older brother. So I had her to talk to and my hubby was great through it all too!
Well, again I wish you the best of luck. Let me know when you find out any good news in the future.
Have a great evening! Best of wishes!
-tracie