Any third time moms out there, 38 years old, with severe migraines, nausea, and high blood sugar very early on have and SUCCESS stories?

I read way too many stories on these boards that have me freaking out. About everything. I'm finding it impossible to be positive in light of all the miscarriages, stillbirth, molar pregnancies, chromosomal abnormalities, neural and heart defects, premature births, and complications I keep reading about.

I have an appointment timeouts what's they're going to tell me I'm GD, and an ultrasound abc in terrified there will be no heartbeat this time. 😢 I just can't find a way to stay positive at all.