Faint line 1 week after period?????

Taylor

Hello all! So my period literally ended a week ago today, I’ve cramped on and off since then. But today the cramps have been terrible right in my lower back. So I thought I’ll take a strip test just to double check 🤷🏻‍♀️ I swear I see a faint line. But how is it even possible???? Top test is from day before period started.