Ahhh sayang, ini betul-betul kena tanya doctor atau pergi clinic asap, terutama kalau ada palpitations dan chills, jangan tunggu lagi! Aspirin masa pregnant (I assume 8 weeks tu pregnant?) kena consult with your OB first, and those symptoms you're describing, jantung berdebar, badan seram sejuk, tu bukan perkara main-main, tak boleh tanya mak cik kat community je. Please go see your doctor hari ni kalau boleh, okeh? Better safe than sorry with our little ones!