3 times pregnancy test same result one red and one white line

Ulitin mopo ulit mamsh, pero usually kasi pag buntis ka talaga 1-2min lang makkita mona dalawang red line kahit malabo yung isa. Pag negative possible na mag dalawa yung line or may makita ka parang white pag sobrang tagal bago mo tinignan like after 20min