5 weeks 2 days pregnant and nervous everyday after a loss

I had a blighted ovum in December, found out at 8 weeks 3 days at my ultrasound that nothing had developed in the gestational sac. Had a miscarriage and passed it all a week later at 9 weeks. Now I’m pregnant again, and waiting for my first ultrasound (next week) and I’m so anxious everyday. I had my doctor order HCG blood tests which tripled 48 hours apart. Reassuring? Yes, for a day until the voice in my head says “but that doesn’t mean there’s anything growing, it could be empty again”. I want to be happy and i want to celebrate this pregnancy and be hopeful but everything in me is just telling myself to guard my emotions. And even after the first ultrasound, anything could still go wrong. So when will i be happy and allow myself to be hopeful and excited? And yes i have a therapist who is helping me through all of this, i just spend too much time in my head.