Can a plan b make a pregnancy test positive?

Ariadna • 23 years old. Expecting first baby 👼
I took a plan b and haven't gotten my period. I took two pregnancy test and they both came out positive. I was a week and a half late. I talked to a friend who works at a pregnancy center. And she says maybe the plan b had something to do with it unless it just completely failed. Have you guys had this happen ever?​the bottom pic my friend took one and obviously she wasn't pregnant. But mine is the bottom one