Sunny,
I hope I can help ease your mind about the m/c. I'm so sorry for your loss. I've recently has 2 m/c both @ 4/12 weeks. I saw a fertility specialist this week and he explained that 75% of fertilized eggs are abnormal and will not produce a healthy pregnancy. He said that m/c that early is actually a good sign if there is a good sign. It points more to the fact that the egg/sperm had a problem, like a chemical pregnancy, and does not suggest that we will have problems carring a normal pregnancy. So that is good news.
He said that if you carry the baby long enough to have a heart beat on ultrasound and then miscarry that it's a whole other story. 75% is a high number so don't be discouraged. Stay informed and try to keep your head up!!! .Good Luck