Palpitations are quite common in pregnancy actually, especially around this stage when your heart is working harder to pump more blood for baby. That said, three days of noticing it is worth getting checked out just to be safe, so might be good to bring it up with your gynae or PD at your next visit, or call the clinic if it's making you anxious. In the meantime, try to rest more and stay hydrated, since sometimes dehydration can trigger it too.
same here! i start to have it at 25 weeks or might be earlier. during consultation the docs said it’s normal for as long blood pressure is normal as well.