Stressed!

Ladies I’m beyond stressed obstetrician said that I have low Papp A of 0.213 but when having ultra sound done it shows I’m measuring 2 weeks ahead. I’m currently on controlled diet (being treated as a diabetic but I have tested negative for it) has anyone been through with a low Papp A and ultrasound showing different? Was everything ok at the end?

Kind regards a stressful Mum.