Waalaikumassalam! Ahhh, nasib baik RTK negatif lah, tapi memang tak selesa kan masa 12 weeks pregnant dengan demam macam ni. A few of my mum friends yang pregnant masa flu season cakap minum banyak air, rest as much as possible (even though pregnant moms can never rest fully haha), and paracetamol is safe for pregnancy, but since you've got the body aches and cough together, better check with your gynae or clinic just to make sure, especially at this stage. They might suggest something safer for the cough at least. Jangan tahan-tahan, k, badan dah berkerja berat nangung baby, so fighting off virus pun draining.