my mom has been in and out of the hospital since right before christmas. she first had these feelings that her heart was holding its breath and it was skipping beats. she had many ekgs and all they told her was it was stress to avoid caffene. she has and she has been on medicine and it has not really helped. she has been on beta- blockers and they said she has svt, but the symptoms have not stopped. she now has constipation and the doctor said she is now severly anemic and they dont know the cause yet. she said shes not sure if its her esophagus or her heart she cant explain the feeling but there is NO PAIN. does anyone have any ideas on what it could possibly be??