Hi, On Wednesdag I Found Out I'm Pregnant And Suffer

Hi, on Wednesdag I found out I'm pregnant and suffer from SVT. I weened myself off my pill per doctors orders and now I haven't taken my heart medication in 3 days. I noticed with more of an iron intake my heart hasn't had any significant episodes. I'm in a lot of shock over this because if I forgot my pill for 1 day, my heart would race but now that I've increased my iron (raisins, spinach, poultry) I haven't had any SVT symptoms. Is there a strong correlation between SVT and anemia?