I need some help....

Samantha
Please don't judge me. Me and my fiance are TTC we have a 4 month old son. I got my period feb 6- Feb 12... I'm waiting for her to come and still hasn't came I took a test and nothing showed up. With my last child it showed up very dark.. But I just took this test.. And I swear I see a line... Can someone please help a sister out here....please...