Hello, I have gone through the query and understood your concern. Since you have already undergone sonography, fetal DNA sampling is another possible option to look for any possible genetic defects. Nuchal scan and triple test should also be done before planning further management. If no anomalies are detected in any of the tests, you may continue with the pregnancy with regular and proper monitoring. Stress tests and fetal cardiotocograms may be done to detect fetal compromise. Hope you find this information useful. Take care.