Freaking out 😭

Right now I’m 15 weeks 4 days with my 4th pregnancy (all 3 prior ended in mc) according to the dr so far everything looks good-knock on wood- but for my 20 week anatomy scan they want me to see the high risk dr to have an extra thorough look at the baby. The high risk dr called me and wants me to go in to have blood drawn to see if they can find any reason I may have miscarried 3x prior (thrombofilia, lupus, etc.)

I’m freaking out because I’m already worried about this baby what if they find something? What if they tell me this baby won’t make it either? I don’t know how I’m going to wait 3 weeks to know....