Sayang, brown spotting + positive test tapi scan tak nampak apa-apa, especially hanya 8 bulan lepas C-section, ini kena check dengan doctor lagi asap, okay? Could be anything dari normal pregnancy positioning sampai things yang perlu immediate attention, tapi bukan boleh guess-guess online. Few of my mum friends ada encounter spotting awal pregnancy, but everyone's situation lain, yours especially kena professional assessment sebab recent surgery. Jangan delay, terus je call your OB or pegi hospital untuk proper scan and bloods. They'll be able to confirm apa yang happening, and you'll feel much better once you know for sure. Take care of yourself!