Sending you a big hug ❤️ Pregnancy after a miscarriage can feel very different, and what you're describing is actually really common. Many moms find it hard to relax, even when everything is going well.
It's also understandable to be extra cautious with your history of type 2 diabetes.
At 12 weeks, the risk of miscarriage is generally much lower than it was in the first few weeks, although it's never completely zero. If something genuinely feels off, like heavy bleeding, severe pain, leaking fluid, or reduced fetal movements later in pregnancy, it's always okay to get checked. For the day-to-day worries though, hopefully your regular checkups can give you some reassurance.
One day at a time, mama ❤️ Many pregnancies after a previous loss do go on to have healthy outcomes, and I hope this pregnancy is exactly that for you.