Hi
Thanks for posting your query.
Fluttering of heart ( palpitations) can occurs due to many reasons like Pain , fear, anxiety, fever etc . These conditions increase the
heart rate which is a normal response.
There are other conditions like heart problems,
thyroid problems, low blood pressure, adrenal problems which can cause palpitations. But since she has been tested by specialist it's very unlikely of these conditions to be present.
So palpitations could be just a response to nausea. Now nausea could be due to stress of delivery,
hormonal changes post delivery , acidity or
indigestion. These are simple conditions which shall subside on its own . She can take
ondansetron tablets for nausea and avoid spicy and non veg food.
If nausea persists for more than 3 days kindly get a liver function test.
Hope this information was useful to you.
Any clarification feel free to ask.