Uy, that's a scary situation talaga! Actually, a few of us mum friends had spotting in the first tri and it turned out okay naman, one had it for almost two weeks pero healthy baby pa rin ngayon, so it happens more often than you'd think. The lack of symptoms is also normal for some kasi every pregnancy is different; some mommies walang anything until second tri pa. But honestly, kahit na common ito, kailangan mo talaga mag-check sa doctor para ma-rule out any concerns at ma-monitor ang baby properly with ultrasound, peace of mind na lang, hindi dapat mag-alala alone nito. Sending you prayers, mommy, maraming successful stories with spotting so there's hope!