Hii I took a rubella vaccine on 13th Dec 2021 and my last LMP was 11th Jan 2022. In March 2022 when I took a rubella igg and igm test ,both were positive,I think due to recent vaccination may be. I never had any rash or any such issue before pregnancy nor after it but I was suggested in a pre gynac checkup to take rubella vaccine so I took it in last December. In April 2022 my doctor suggested me to get a rubella PCR and avidity test. My PCR was negative and avidity was high which she told is all fine. Later she told me to get the anomaly scan at 19 weeks with a fetal medicine specialist which was also absolutely ok. Now am I required to get a fetal Echo done. if yes why?