So SO sorry to hear this Paula, the best way to deal with it is in your own way. Everyone is different on handling the emotions of miscarriage. Some people move right on, stay positive and try try again fairly quickly, and some take longer to grieve such a sad loss.
With that said, I have three healthy gorgeous girls, and had two miscarriages as well. My very first pregnancy was similar to your situation. A blighted ovum. Never really took off. Conception, then weeks later, no heartbeat. The second m/c, which happened between my second and third children, I lost a baby at around 16 weeks. Was thoroughly tested, no explanation. Discovered at a routine heartbeat check. I'm healthy as a horse, no medical issues. Plus I had had two very normal, healthy, non-eventful pregnancies prior to the second m/c.
Sometimes there's no explanation that the doctors can give. There was no explanation for either of mine. Your OB will tell you how 'normal' m/c is (normal to me is if I know several people who have experienced it, as well as myself). Sometimes pg's just are not viable, and the baby passes. It can be in the beginning, middle, or end.
I am one of those that never let it have long term effects. The second was obviously a harder, because we already knew it was a girl, but I moved forward, got myself well emotionally and physically, and tried tried again. The end result of my three girls is fabulous, but I worked hard along the way.
There are some silver linings possibly in this cloud. First, there's the issue of the embryo possibly having had serious problems. Sometimes bad things happen for good reasons. Secondly, if your body is miscarrying on it's own, that's actually a positive, as my body never showed signs or began rejecting the babies. I would just find out, with no signs, and have to have a D&C. I would have liked to have been able to avoid those surgeries.
Good luck on your next pg, you'll see that everything will be just fine, but take your own time in mourning the loss of this little one. I am sorry for your loss.