Hello. First, let me say I'm happy that you have found love, again. However, my personal belief is that you should wait until you are married, before you bring children into the world.
Now, to the issue at hand: My best friend was in your exact position, and had the same exact outcome. She was so devastated, she went through several methods of birth control so she wouldn't have to go through another miscarriage. She even tried the new IUD. Like you, she fell
in love and wanted a baby; 2 1/2 years later, she became pregnant. Today, she has the most handsome baby boy I've ever seen! The pregnancy was normal, and her baby boy was born strong and healthy. We believe her waiting until her body had rested, and her mind was at ease made a huge impact on her situation. She'll probably always miss the baby who didn't live, but mentally she was in a healthy and good place. So my advice to you is to wait a little while. I don't know how old you are, but don't rush it. Give yourself enough time to totally heal (mind, body, & spirit), and plan well before you try again. Prayerfully, you'll make the (right) decision to be married.
I wish you well, and please let us know what happens. God bless you.