Sayang, this really needs a doctor's check-up asap, please follow up with your gynae or go back to the hospital kalau bleeding continues or gets heavier, okay? Since you're only 6 weeks and scan shows gestational sac je, spotting can happen but better safe than sorry. A few of us mums kena sama, and our doctors always want to monitor closely at this stage. Rest as much as you can, jangan lift heavy things, and note down if the bleeding changes (colour, amount, cramps), bring that info to your next appointment. Take care of yourself, and don't worry alone, reach out to your doctor anytime if something feels off.