Sayang, this is really something you need to check dengan doctor or at a clinic, they can do a proper blood test (beta HCG) to confirm, bukan rely on home test lines je. Kalau dah 7 minggu kat kandungan, the line should be very clear and dark by now, so if you're unsure, don't wait lah, go see your gynae ASAP to get proper confirmation. A few of my mum friends had the same worry, and the clinic put their minds at ease straight away with the blood test. Better safe than sorry, kan?