Sayang, any bleeding in early pregnancy memang perlu check dengan doctor, okay? Even if it might be implantation bleeding, it's better to get it confirmed, especially at 7 weeks, kena make sure everything's progressing well. A few of my mum friends had light bleeding early on but mereka semua pergi scan untuk peace of mind, and that's what you should do juga. Better safe than sorry lah. Call your clinic atau go see your gynae, tau?