In two hours, an ultrasound, I'm so nervous. Lately, all sorts of bad …

In two hours, an ultrasound, I'm so nervous. Lately, all sorts of bad thoughts have been visiting me, the previous three pregnancies were unsuccessful, and sometimes it seems like I'm not pregnant at all, nausea and breast pain are terribly painful, and the hCG showed pregnancy, but what if this is just a hormonal imbalance? And after miscarriage in the same month, a new pregnancy is very strange. Until then, I will wait for the ultrasound, my consciousness will be lost from fear.