Overthinking with future pregnancy

Well I’ve had a blighted ovum my first pregnancy shortly miscarry bad part was I was gonna have the baby couple days after my birthday. But then I hate get pregnant and miscarry again. I can’t get testing done because we got miscarry more than once. So I can’t get testing done 🤷🏼‍♀️🤦🏻‍♀️. Anybody do different to have a healthy pregnancy? Or vitamins.