Hi shel and onion, I was there when I first fell pregnant, as I had suffered two miscarriages beforehand. You've just got to think that the odds are higher that you will have a healthy pregnancy than miscarry.
What helped me was breaking the twelve weeks down into milestones. I got a blood test every three days until the eight week scan to check my levels were rising. I then had a scan at 6, 8, 10 and 12 weeks as well. It reassured me a gave me peace of mind for a few days after each result. Also focusing on being in the moment, enjoying each day. Try not to think about the future or the past because we can't change it. Focus on each day instead. But we are here to help you, so getting your frustrations and fears out in this forum helps.
AFM I'm now 37 weeks and three days and waiting for our little man to come. Obs appointment went well on tuesday and the head is not engaged yet so I reckon I have at least a week to go. The doctor reckons he weighs about 3 kgs now so he won't be a small baby when he's born. But we do want our boy to grow into a strapping man, so it's all good.