Try to focus on the pregnancies that haven't been lost
I think there are more of them here than ones that have been lost! I know it's scary but worrying isn't going to help. The best thing you can do is stop testing and think positive thoughts, talk to your baby, take care of yourself, and keep yourself occupied if you can. I love it, for instance, when I see a girl from the second trimester pop over to comment on a thread in this forum and I see her ticker at like 20 or 30+ weeks. It makes me realize there is life after the first trimester! Also, look around you at all the people you see while you're driving, on the television, in the grocery store, at your work place, in your family. ALL of those people started out as a tiny little group of cells that formed into an embryo that formed into a fetus that formed into a baby that grew into a child that grew into an adolescent that grew into an adult. There are millions, billions of people on this planet and there have been for thousands and thousands of years. So when you think about it that way, there are a lot of pregnancy successes walking around, surrounding you EVERY DAY
Focus on those! Go poke around in the second and third trimester boards and look at what those women are saying. Go to the breastfeeding boards. Listen to your body and acknowledge every time you have a pregnancy symptom. You're early on yet and I didn't start getting intense pregnancy symptoms until the middle-end of the 5th week and then the 6th week was like the worst of my life, and the 7th so far sucks as well but isn't as bad as last week. You'll have plenty of time to have your body remind you of just how pregnant you are! Lol! Try to relax, try to enjoy it, and try to encourage your baby to grow. I don't know if there's scientific evidence to say that it helps but I know that it helps me feel better. I constantly affirm that this feels like a strong pregnancy.
I hope my advice helps you! Here's a hug