Hello
Thanks for writing to us with your health concern.
Having a lower jaw chin that is small is called micrognathia.
Sometimes it is part of a generalized chromosomal disorder.
A white spot on the baby 's heart is called an Echogenic Cardiac Focus.
This too by itself is not a disease or disorder, but sometimes is a part of a larger abnormal syndrome.
Such findings ( micrognathia, echogenic cardiac focus ) are called soft markers.
These soft markers prompt the doctor / clinician to search for any chromosomal disorders.
Hence, further tests should be done , such as -
1. TIFFA - detailed anomaly scan in expert hands
2. Fetal
Echocardiography and Doppler
3.
Amniocentesis if indicated.
Do not worry, most of the times, these are just isolated lesions.
All the best.