Pregnancy

Okay to last month my period was a week late so I took a few pregnancy test and they came up negative then the day before my periods came I took one final one and it was negative once more then came back up n checked it a few hours later and there was a faint line ( positive) so I said I would take another in the morning then when I woke up my period had came I already have a little girl she will b one in December so just wondering if u could b pregnant again or maybe jst a false positive? Thanks