Siena,
I have thal intermedia and I was getting lots of what they called premature heartbeats. It felt like the rhythm was off a little, and the beats were very noticeable. Normally you don't really feel your heartbeat, but these felt like they were going to pound out of my chest. It drove me crazy. I would have them every few seconds and it would go on for hours. It seemed to happen when my body was stressed, or my hemoglobin was low. I haven't had it happen very much lately. The doctor said it was OK, but it sure didn't seem right to me. It would wear me out.
Sorry to hear about losing your baby, and the miscarriages. Talk about stress, you have been through so much. My thoughts are with you and hope that your heart will settle down after your stress level is able to relax a little. Take care, Jean