Hay anak, please go see your OB agad-agad, especially at 39 weeks, brown discharge can mean different things at this stage and hindi dapat i-ignore. Better safe than sorry, lalo na malapit na ang due date mo. One of my mum friends had something similar and it turned out she needed to be checked right away. Tawagan agad ang doctor or go to the hospital para malaman kung okay lang. Rooting for you and baby!