Ay, congratulations mama! Kung positive ang test kahit faint line pa lang, most likely pregnant ka na talaga, a few of us got those faint lines sa unang araw at nag-confirm na talaga after a few days pag mas lumalakas ang line. The hormone levels pa lang ay tumaas, kaya parang ganyan ang dating ng result, pero that's usually how it starts!
Best thing to do is take another test in a couple of days para mas clear ang line, or better yet, schedule na with your OB para sa proper confirmation and ultrasound, they'll be able to tell you exactly kung kailan ka po nagstart. Congrats ulit!