Tachycardia is when you heart beats slightly faster.
Being anemic can cause this to happen as you are trying to circulate the oxygen rich blood around faster. You heart works harder when you are pregnant anyway due to having more blood in your body.
also if you were attached to an electrocardiogram you were probably feeling anxious and worried.
If you feel your symptoms coming on, or your heart speeding up, take time out and try to relax. Try not to worry yourself and take things easy. You will probably find that treating the anemia will improve matters.
If you are unclear or worried about anything though you need to get in touch with them again, and maybe ask a nurse for clarification, doctors sometimes forget that you don't understand everything they say, and that due to being stressed you may forget a lot anyways. Never be afraid to ask what they mean.
take care and be nice to yourself
