Ohhh, I understand your confusion! Honestly, pagi negative tapi petang ada 2 lines ni memang confusing, especially kalau dah 7 minggu dari last period, normally by then the line should be solid. A few of my mum friends went through the same thing, and they found out it was either timing (urine terlalu encer pagi-pagi) or hormone levels yang still building up, tapi sebab you dah 7 minggu, best to check dengan doctor to make sure everything's okay and maybe get a blood test to confirm, better safe than sorry, kan? Mungkin juga test yang pagi tu dah lama or simpan salah, so grab a fresh one or see the doc straightaway untuk peace of mind.