Hi.......I am 19 weeks pregnant...... I just came back from my ultrasound scan today, and the doctor said that my baby's heartbeat is irregular and there could be blockage in her heart......... Does anyone know anything about this? I am very worried, but the doc didn't schedule any other appt for me. She just asked me to wait to go for the 22 week fetal abnormality scan and dont't drink any caffeine. I feel so worried. Anyone with similar experience have any advice for me?