My mom is scaring me

I'm experiencing threatened miscarriage. I had no hope at first but I'm holding out for some hope now. But my mom has said if I do go for another ultrasound and see that a baby actually has developed, since it's 3 weeks behind it probably will have problems and it's probably not a healthy baby. That scares the shit out of me o.O she said I should be less worried that I'm miscarrying Bc if I am then the baby wasn't healthy and I can try again and things will go better.  She says I should be MORE worried that I DONT miscarry and tht the baby will have tons of health problems... Oh my goodness guys. Now I'm worried either way -_- what has she done. Is this woman speaking any truth?