Alhamdulillah baby okay tu good news! Brown spotting memang boleh jadi normal especially dalam early pregnancy, a few of my mum friends had the same thing at 8 weeks, some lasted a few weeks, some just sekali-dua aje. Since your doctor dah check and baby's heartbeat strong, that's reassuring, tapi memang kena keep monitoring macam dokter cakap, if it becomes heavy bleeding, severe cramping, or tak jelas, kena balik jumpa doctor terus, okay? Try to relax, avoid heavy lifting, dan minum plenty of water. Hopefully it'll settle down soon, sending you all the best vibes!