Sayang, nadi laju tu kena check dengan doctor sebab banyak sebab boleh jadi, stress, caffeine, or something else yang perlu medical check. Jangan self-diagnose ya! Kalau you tengah pregnant or postpartum, a few of us mums pernah rasa palpitations gak, tapi tetap kena tanya doctor to be safe. Pastu dia boleh advise properly based on your situation. Jangan worry alone, just get it checked out okay?