Iv just had the most scariest episode ever, after arriving at work I all of a sudden felt extremely unwell. My heart was pounding out of my chest, my throat felt tight and I felt like I couldn't breath. After 45 minutes anambulance was called and I was taken to the maternity assessment ward. My heart-rate was 123bpm and my baby's was 174bpm. Iv never felt so scared in my life. After an hour assessment both finally dropped, my boys went to 145bpm and I was aloud to leave. I was told this can be common in pregnancy and was just wondering if this has happened to anyone else and any advise on how to avoid this happening again??